From c6432ea9cc043994d5b7dcb3ad86a087777cb40c Mon Sep 17 00:00:00 2001 From: Dimitris Papastamos Date: Mon, 11 Mar 2013 17:27:02 +0000 Subject: regmap: Initialize `map->debugfs' before regcache In the rbtree code we are exposing statistics relating to the number of nodes/registers of the rbtree cache for each of the devices. Ensure that `map->debugfs' has been initialized before we attempt to initialize the debugfs entry for the rbtree cache. Signed-off-by: Dimitris Papastamos Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/base/regmap/regmap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 3d2367501fd0..50ef277ea4b6 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -710,12 +710,12 @@ skip_format_initialization: } } + regmap_debugfs_init(map, config->name); + ret = regcache_init(map, config); if (ret != 0) goto err_range; - regmap_debugfs_init(map, config->name); - /* Add a devres resource for dev_get_regmap() */ m = devres_alloc(dev_get_regmap_release, sizeof(*m), GFP_KERNEL); if (!m) { -- cgit v1.2.1 From d558c4733759e077cf449246983a5d1fe97fc434 Mon Sep 17 00:00:00 2001 From: Laxman Dewangan Date: Fri, 8 Mar 2013 11:51:19 +0530 Subject: spi: slink-tegra20: move runtime pm calls to transfer_one_message The prepare_transfer_hardware() is called in atomic context and calling synchronous runtime pm calls can create scheduling deadlock. Therefore, in place of calling runtime PM calls from prepare/unprepare message transfer, calling this in transfer_one_message(). Signed-off-by: Laxman Dewangan Tested-by: Stephen Warren Signed-off-by: Mark Brown --- drivers/spi/spi-tegra20-slink.c | 25 ++++++++----------------- 1 file changed, 8 insertions(+), 17 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c index b8698b389ef3..a829563f4713 100644 --- a/drivers/spi/spi-tegra20-slink.c +++ b/drivers/spi/spi-tegra20-slink.c @@ -858,21 +858,6 @@ static int tegra_slink_setup(struct spi_device *spi) return 0; } -static int tegra_slink_prepare_transfer(struct spi_master *master) -{ - struct tegra_slink_data *tspi = spi_master_get_devdata(master); - - return pm_runtime_get_sync(tspi->dev); -} - -static int tegra_slink_unprepare_transfer(struct spi_master *master) -{ - struct tegra_slink_data *tspi = spi_master_get_devdata(master); - - pm_runtime_put(tspi->dev); - return 0; -} - static int tegra_slink_transfer_one_message(struct spi_master *master, struct spi_message *msg) { @@ -885,6 +870,12 @@ static int tegra_slink_transfer_one_message(struct spi_master *master, msg->status = 0; msg->actual_length = 0; + ret = pm_runtime_get_sync(tspi->dev); + if (ret < 0) { + dev_err(tspi->dev, "runtime get failed: %d\n", ret); + goto done; + } + single_xfer = list_is_singular(&msg->transfers); list_for_each_entry(xfer, &msg->transfers, transfer_list) { INIT_COMPLETION(tspi->xfer_completion); @@ -921,6 +912,8 @@ static int tegra_slink_transfer_one_message(struct spi_master *master, exit: tegra_slink_writel(tspi, tspi->def_command_reg, SLINK_COMMAND); tegra_slink_writel(tspi, tspi->def_command2_reg, SLINK_COMMAND2); + pm_runtime_put(tspi->dev); +done: msg->status = ret; spi_finalize_current_message(master); return ret; @@ -1148,9 +1141,7 @@ static int tegra_slink_probe(struct platform_device *pdev) /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; master->setup = tegra_slink_setup; - master->prepare_transfer_hardware = tegra_slink_prepare_transfer; master->transfer_one_message = tegra_slink_transfer_one_message; - master->unprepare_transfer_hardware = tegra_slink_unprepare_transfer; master->num_chipselect = MAX_CHIP_SELECT; master->bus_num = -1; -- cgit v1.2.1 From 4a25b680b1e84cf97c740c8005e2c6655d6cfa7f Mon Sep 17 00:00:00 2001 From: Kevin Cernekee Date: Tue, 12 Mar 2013 00:13:36 +0100 Subject: spi/bcm63xx: Remove unused variable This fixes the following warning: drivers/spi/spi-bcm63xx.c: In function 'bcm63xx_spi_setup': drivers/spi/spi-bcm63xx.c:157:6: warning: unused variable 'ret' Signed-off-by: Kevin Cernekee Acked-by: Florian Fainelli Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 9578af782a77..0415a32cce33 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -152,7 +152,6 @@ static void bcm63xx_spi_setup_transfer(struct spi_device *spi, static int bcm63xx_spi_setup(struct spi_device *spi) { struct bcm63xx_spi *bs; - int ret; bs = spi_master_get_devdata(spi->master); -- cgit v1.2.1 From b435ff212e91bddc2d12e6638a4d846d5f60daa6 Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Tue, 12 Mar 2013 00:13:37 +0100 Subject: spi/bcm63xx: don't disable non enabled clocks in probe error path When msg_ctl_width is set to an invalid value we try to disable the clock despite it never being enabled. Fix it by jumping to the correct label. Signed-off-by: Jonas Gorski Acked-by: Florian Fainelli Signed-off-by: Mark Brown --- drivers/spi/spi-bcm63xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/spi/spi-bcm63xx.c b/drivers/spi/spi-bcm63xx.c index 0415a32cce33..d7df435d962e 100644 --- a/drivers/spi/spi-bcm63xx.c +++ b/drivers/spi/spi-bcm63xx.c @@ -489,7 +489,7 @@ static int bcm63xx_spi_probe(struct platform_device *pdev) default: dev_err(dev, "unsupported MSG_CTL width: %d\n", bs->msg_ctl_width); - goto out_clk_disable; + goto out_err; } /* Initialize hardware */ -- cgit v1.2.1 From 8abac3ba51b5525354e9b2ec0eed1c9e95c905d9 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Wed, 13 Mar 2013 16:38:33 +0100 Subject: regmap: cache Fix regcache-rbtree sync The last register block, which falls into the specified range, is not handled correctly. The formula which calculates the number of register which should be synced is inverse (and off by one). E.g. if all registers in that block should be synced only one is synced, and if only one should be synced all (but one) are synced. To calculate the number of registers that need to be synced we need to subtract the number of the first register in the block from the max register number and add one. This patch updates the code accordingly. The issue was introduced in commit ac8d91c ("regmap: Supply ranges to the sync operations"). Signed-off-by: Lars-Peter Clausen Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/base/regmap/regcache-rbtree.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/base/regmap/regcache-rbtree.c b/drivers/base/regmap/regcache-rbtree.c index e6732cf7c06e..79f4fca9877a 100644 --- a/drivers/base/regmap/regcache-rbtree.c +++ b/drivers/base/regmap/regcache-rbtree.c @@ -398,7 +398,7 @@ static int regcache_rbtree_sync(struct regmap *map, unsigned int min, base = 0; if (max < rbnode->base_reg + rbnode->blklen) - end = rbnode->base_reg + rbnode->blklen - max; + end = max - rbnode->base_reg + 1; else end = rbnode->blklen; -- cgit v1.2.1 From aabd6a8fa5a933bdf968cd86e34122745c1960e8 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Sjur=20Br=C3=83=C2=A6ndeland?= Date: Mon, 18 Mar 2013 19:19:14 +1030 Subject: Revert "virtio_console: Initialize guest_connected=true for rproc_serial" MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This reverts commit 8078db789a92b10ff6e2d713231b5367e014c53b, and adds a lengthy comment explaining the problem area. The reverted patch caused opening of ports to fail for rproc_serial. In probe guest_connected was set to true, but port_fops_open() fails with -EMFILE if guest_connected already is true. Signed-off-by: Sjur Brændeland Acked-by: Amit Shah Signed-off-by: Rusty Russell --- drivers/char/virtio_console.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index e905d5f53051..e6ba6b7887e9 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -1436,7 +1436,7 @@ static int add_port(struct ports_device *portdev, u32 id) * rproc_serial does not want the console port, only * the generic port implementation. */ - port->host_connected = port->guest_connected = true; + port->host_connected = true; else if (!use_multiport(port->portdev)) { /* * If we're not using multiport support, @@ -1752,13 +1752,23 @@ static void in_intr(struct virtqueue *vq) port->inbuf = get_inbuf(port); /* - * Don't queue up data when port is closed. This condition + * Normally the port should not accept data when the port is + * closed. For generic serial ports, the host won't (shouldn't) + * send data till the guest is connected. But this condition * can be reached when a console port is not yet connected (no - * tty is spawned) and the host sends out data to console - * ports. For generic serial ports, the host won't - * (shouldn't) send data till the guest is connected. + * tty is spawned) and the other side sends out data over the + * vring, or when a remote devices start sending data before + * the ports are opened. + * + * A generic serial port will discard data if not connected, + * while console ports and rproc-serial ports accepts data at + * any time. rproc-serial is initiated with guest_connected to + * false because port_fops_open expects this. Console ports are + * hooked up with an HVC console and is initialized with + * guest_connected to true. */ - if (!port->guest_connected) + + if (!port->guest_connected && !is_rproc_serial(port->portdev->vdev)) discard_port_data(port); spin_unlock_irqrestore(&port->inbuf_lock, flags); -- cgit v1.2.1 From b7d44d9487a11e835de10908f4ab30b4290c0b7f Mon Sep 17 00:00:00 2001 From: Satoru Takeuchi Date: Wed, 20 Mar 2013 11:28:51 +1030 Subject: hw_random: free rng_buffer at module exit rng-core module allocates rng_buffer by kmalloc() since commit f7f154f1246ccc5a0a7e9ce50932627d60a0c878. But this buffer won't be freed and there is a memory leak possibility at module exit. Signed-off-by: Satoru Takeuchi Signed-off-by: Rusty Russell --- drivers/char/hw_random/core.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers') diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index 69ae5972713c..a0f7724852eb 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -380,6 +380,15 @@ void hwrng_unregister(struct hwrng *rng) } EXPORT_SYMBOL_GPL(hwrng_unregister); +static void __exit hwrng_exit(void) +{ + mutex_lock(&rng_mutex); + BUG_ON(current_rng); + kfree(rng_buffer); + mutex_unlock(&rng_mutex); +} + +module_exit(hwrng_exit); MODULE_DESCRIPTION("H/W Random Number Generator (RNG) driver"); MODULE_LICENSE("GPL"); -- cgit v1.2.1 From cc904c7188c29847817f35e6966fec3014c7479b Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 14 Mar 2013 08:35:06 +0200 Subject: iwlwifi: fix length check in multi-TB HCMD As reported by Ben Hutchings, there was a harmless issue in the checks being done on the lengths of the TBs while building the TFD for a multi-TB host command. Cc: stable@vger@kernel.org Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/pcie/tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/pcie/tx.c b/drivers/net/wireless/iwlwifi/pcie/tx.c index 8595c16f74de..cb5c6792e3a8 100644 --- a/drivers/net/wireless/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/iwlwifi/pcie/tx.c @@ -1264,7 +1264,7 @@ static int iwl_pcie_enqueue_hcmd(struct iwl_trans *trans, for (i = 0; i < IWL_MAX_CMD_TBS_PER_TFD; i++) { int copy = 0; - if (!cmd->len) + if (!cmd->len[i]) continue; /* need at least IWL_HCMD_SCRATCHBUF_SIZE copied */ -- cgit v1.2.1 From 4620020b5d7ca34d1c03fa98b0ca457320cb7d71 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Wed, 13 Mar 2013 16:38:32 +0200 Subject: iwlwifi: set rfkill in internal state of the transport We didn't update the internal of the PCIe transport when we read the RFkill state directly. Fix that. Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/pcie/trans.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c index 17bedc50e753..12c4f31ca8fb 100644 --- a/drivers/net/wireless/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/iwlwifi/pcie/trans.c @@ -475,6 +475,10 @@ static int iwl_trans_pcie_start_fw(struct iwl_trans *trans, /* If platform's RF_KILL switch is NOT set to KILL */ hw_rfkill = iwl_is_rfkill_set(trans); + if (hw_rfkill) + set_bit(STATUS_RFKILL, &trans_pcie->status); + else + clear_bit(STATUS_RFKILL, &trans_pcie->status); iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill); if (hw_rfkill && !run_in_rfkill) return -ERFKILL; @@ -641,6 +645,7 @@ static int iwl_trans_pcie_d3_resume(struct iwl_trans *trans, static int iwl_trans_pcie_start_hw(struct iwl_trans *trans) { + struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); bool hw_rfkill; int err; @@ -656,6 +661,10 @@ static int iwl_trans_pcie_start_hw(struct iwl_trans *trans) iwl_enable_rfkill_int(trans); hw_rfkill = iwl_is_rfkill_set(trans); + if (hw_rfkill) + set_bit(STATUS_RFKILL, &trans_pcie->status); + else + clear_bit(STATUS_RFKILL, &trans_pcie->status); iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill); return 0; @@ -694,6 +703,10 @@ static void iwl_trans_pcie_stop_hw(struct iwl_trans *trans, * op_mode. */ hw_rfkill = iwl_is_rfkill_set(trans); + if (hw_rfkill) + set_bit(STATUS_RFKILL, &trans_pcie->status); + else + clear_bit(STATUS_RFKILL, &trans_pcie->status); iwl_op_mode_hw_rf_kill(trans->op_mode, hw_rfkill); } } -- cgit v1.2.1 From 2d5d50ee596361566f7f84300117cba7d7672bc5 Mon Sep 17 00:00:00 2001 From: Emmanuel Grumbach Date: Thu, 31 Jan 2013 15:03:55 +0200 Subject: iwlwifi: dvm: don't send HCMD in restart flow There is a race between the restart flow and the workers. The workers are cancelled after the fw is already killed and might send HCMD when there is fw to handle them. Simply check that there is a fw to which the HCMD can be sent before actually sending it. Cc: stable@vger.kernel.org Signed-off-by: Emmanuel Grumbach Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/dvm/lib.c | 9 +++++++++ drivers/net/wireless/iwlwifi/dvm/ucode.c | 4 ++-- 2 files changed, 11 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/dvm/lib.c b/drivers/net/wireless/iwlwifi/dvm/lib.c index 86ea5f4c3939..44ca0e57f9f7 100644 --- a/drivers/net/wireless/iwlwifi/dvm/lib.c +++ b/drivers/net/wireless/iwlwifi/dvm/lib.c @@ -1261,6 +1261,15 @@ int iwl_dvm_send_cmd(struct iwl_priv *priv, struct iwl_host_cmd *cmd) return -EIO; } + /* + * This can happen upon FW ASSERT: we clear the STATUS_FW_ERROR flag + * in iwl_down but cancel the workers only later. + */ + if (!priv->ucode_loaded) { + IWL_ERR(priv, "Fw not loaded - dropping CMD: %x\n", cmd->id); + return -EIO; + } + /* * Synchronous commands from this op-mode must hold * the mutex, this ensures we don't try to send two diff --git a/drivers/net/wireless/iwlwifi/dvm/ucode.c b/drivers/net/wireless/iwlwifi/dvm/ucode.c index 736fe9bb140e..1a4ac9236a44 100644 --- a/drivers/net/wireless/iwlwifi/dvm/ucode.c +++ b/drivers/net/wireless/iwlwifi/dvm/ucode.c @@ -367,6 +367,8 @@ int iwl_load_ucode_wait_alive(struct iwl_priv *priv, return -EIO; } + priv->ucode_loaded = true; + if (ucode_type != IWL_UCODE_WOWLAN) { /* delay a bit to give rfkill time to run */ msleep(5); @@ -380,8 +382,6 @@ int iwl_load_ucode_wait_alive(struct iwl_priv *priv, return ret; } - priv->ucode_loaded = true; - return 0; } -- cgit v1.2.1 From 6c43a519610a5e11af5be707ad88391ce86129ba Mon Sep 17 00:00:00 2001 From: Heiko Carstens Date: Wed, 20 Mar 2013 09:45:22 +0100 Subject: drivers/Kconfig: add several missing GENERIC_HARDIRQS dependencies With this patch an allmodconfig finally builds on s390 again. Fixes these build errors: ERROR: "devm_request_threaded_irq" [drivers/spi/spi-altera.ko] undefined! ERROR: "devm_request_threaded_irq" [drivers/media/platform/sh_veu.ko] undefined! ERROR: "devm_request_threaded_irq" [drivers/dma/dw_dmac.ko] undefined! Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky --- drivers/dma/Kconfig | 1 + drivers/media/platform/Kconfig | 2 +- drivers/spi/Kconfig | 3 ++- 3 files changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig index 80b69971cf28..aeaea32bcfda 100644 --- a/drivers/dma/Kconfig +++ b/drivers/dma/Kconfig @@ -83,6 +83,7 @@ config INTEL_IOP_ADMA config DW_DMAC tristate "Synopsys DesignWare AHB DMA support" + depends on GENERIC_HARDIRQS select DMA_ENGINE default y if CPU_AT32AP7000 help diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 05d7b6333461..a0639e779973 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -204,7 +204,7 @@ config VIDEO_SAMSUNG_EXYNOS_GSC config VIDEO_SH_VEU tristate "SuperH VEU mem2mem video processing driver" - depends on VIDEO_DEV && VIDEO_V4L2 + depends on VIDEO_DEV && VIDEO_V4L2 && GENERIC_HARDIRQS select VIDEOBUF2_DMA_CONTIG select V4L2_MEM2MEM_DEV help diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index f80eee74a311..2be0de920d67 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -55,6 +55,7 @@ comment "SPI Master Controller Drivers" config SPI_ALTERA tristate "Altera SPI Controller" + depends on GENERIC_HARDIRQS select SPI_BITBANG help This is the driver for the Altera SPI Controller. @@ -310,7 +311,7 @@ config SPI_PXA2XX_DMA config SPI_PXA2XX tristate "PXA2xx SSP SPI master" - depends on ARCH_PXA || PCI || ACPI + depends on (ARCH_PXA || PCI || ACPI) && GENERIC_HARDIRQS select PXA_SSP if ARCH_PXA help This enables using a PXA2xx or Sodaville SSP port as a SPI master -- cgit v1.2.1 From 3bff6038f1938d2541943dfde604a9b92f347650 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Mon, 18 Mar 2013 16:01:30 +0100 Subject: s390/scm_block: fix printk format string Use hex digits when referring to scm addresses. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- drivers/s390/block/scm_blk.c | 4 ++-- drivers/s390/block/scm_drv.c | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index 5ac9c935c151..713f0185f96d 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -307,7 +307,7 @@ static void scm_blk_handle_error(struct scm_request *scmrq) case EQC_WR_PROHIBIT: spin_lock_irqsave(&bdev->lock, flags); if (bdev->state != SCM_WR_PROHIBIT) - pr_info("%lu: Write access to the SCM increment is suspended\n", + pr_info("%lx: Write access to the SCM increment is suspended\n", (unsigned long) bdev->scmdev->address); bdev->state = SCM_WR_PROHIBIT; spin_unlock_irqrestore(&bdev->lock, flags); @@ -445,7 +445,7 @@ void scm_blk_set_available(struct scm_blk_dev *bdev) spin_lock_irqsave(&bdev->lock, flags); if (bdev->state == SCM_WR_PROHIBIT) - pr_info("%lu: Write access to the SCM increment is restored\n", + pr_info("%lx: Write access to the SCM increment is restored\n", (unsigned long) bdev->scmdev->address); bdev->state = SCM_OPER; spin_unlock_irqrestore(&bdev->lock, flags); diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c index 5f6180d6ff08..c98cf52d78d1 100644 --- a/drivers/s390/block/scm_drv.c +++ b/drivers/s390/block/scm_drv.c @@ -19,7 +19,7 @@ static void scm_notify(struct scm_device *scmdev, enum scm_event event) switch (event) { case SCM_CHANGE: - pr_info("%lu: The capabilities of the SCM increment changed\n", + pr_info("%lx: The capabilities of the SCM increment changed\n", (unsigned long) scmdev->address); SCM_LOG(2, "State changed"); SCM_LOG_STATE(2, scmdev); -- cgit v1.2.1 From 94f9852de86447088e8e3c12d8b5a8f996acee32 Mon Sep 17 00:00:00 2001 From: Wei Yongjun Date: Wed, 20 Mar 2013 13:40:54 +0100 Subject: s390/scm_blk: fix error return code in scm_blk_init() Fix to return a negative error code from the error handling case instead of 0, as returned elsewhere in this function. Signed-off-by: Wei Yongjun Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky --- drivers/s390/block/scm_blk.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/s390/block/scm_blk.c b/drivers/s390/block/scm_blk.c index 713f0185f96d..e9b9c8392832 100644 --- a/drivers/s390/block/scm_blk.c +++ b/drivers/s390/block/scm_blk.c @@ -463,12 +463,15 @@ static int __init scm_blk_init(void) goto out; scm_major = ret; - if (scm_alloc_rqs(nr_requests)) + ret = scm_alloc_rqs(nr_requests); + if (ret) goto out_unreg; scm_debug = debug_register("scm_log", 16, 1, 16); - if (!scm_debug) + if (!scm_debug) { + ret = -ENOMEM; goto out_free; + } debug_register_view(scm_debug, &debug_hex_ascii_view); debug_set_level(scm_debug, 2); -- cgit v1.2.1 From 1fcbba3d65dff8ce9d25e644fcc86fa8c629de7d Mon Sep 17 00:00:00 2001 From: Martin Schwidefsky Date: Thu, 21 Mar 2013 13:07:18 +0100 Subject: s390/3270: fix minor_start issue The 3270 device nodes 227/0 and 228/0 are special. 227/0 is never used, and 228/0 is used to redirect full screen applications from /dev/3270/tub to the real device node of the 3270 terminal. To keep the device names /dev/3270/tty consistent with the minor number the device driver sets minor_start to 0 and skips minor 0. That makes the tty index equivalent to the minor number. But doing so seems to causes problems with init scripts. A better solution is to set minor_start to the correct value of 1 and set name_base to 1 as well. tty_register_device will then automatically create the correct tty name. Signed-off-by: Martin Schwidefsky --- drivers/s390/char/tty3270.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/s390/char/tty3270.c b/drivers/s390/char/tty3270.c index b907dba24025..cee69dac3e18 100644 --- a/drivers/s390/char/tty3270.c +++ b/drivers/s390/char/tty3270.c @@ -915,7 +915,7 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) int i, rc; /* Check if the tty3270 is already there. */ - view = raw3270_find_view(&tty3270_fn, tty->index); + view = raw3270_find_view(&tty3270_fn, tty->index + RAW3270_FIRSTMINOR); if (!IS_ERR(view)) { tp = container_of(view, struct tty3270, view); tty->driver_data = tp; @@ -927,15 +927,16 @@ static int tty3270_install(struct tty_driver *driver, struct tty_struct *tty) tp->inattr = TF_INPUT; return tty_port_install(&tp->port, driver, tty); } - if (tty3270_max_index < tty->index) - tty3270_max_index = tty->index; + if (tty3270_max_index < tty->index + 1) + tty3270_max_index = tty->index + 1; /* Allocate tty3270 structure on first open. */ tp = tty3270_alloc_view(); if (IS_ERR(tp)) return PTR_ERR(tp); - rc = raw3270_add_view(&tp->view, &tty3270_fn, tty->index); + rc = raw3270_add_view(&tp->view, &tty3270_fn, + tty->index + RAW3270_FIRSTMINOR); if (rc) { tty3270_free_view(tp); return rc; @@ -1846,12 +1847,12 @@ static const struct tty_operations tty3270_ops = { void tty3270_create_cb(int minor) { - tty_register_device(tty3270_driver, minor, NULL); + tty_register_device(tty3270_driver, minor - RAW3270_FIRSTMINOR, NULL); } void tty3270_destroy_cb(int minor) { - tty_unregister_device(tty3270_driver, minor); + tty_unregister_device(tty3270_driver, minor - RAW3270_FIRSTMINOR); } struct raw3270_notifier tty3270_notifier = @@ -1884,7 +1885,8 @@ static int __init tty3270_init(void) driver->driver_name = "tty3270"; driver->name = "3270/tty"; driver->major = IBM_TTY3270_MAJOR; - driver->minor_start = 0; + driver->minor_start = RAW3270_FIRSTMINOR; + driver->name_base = RAW3270_FIRSTMINOR; driver->type = TTY_DRIVER_TYPE_SYSTEM; driver->subtype = SYSTEM_TYPE_TTY; driver->init_termios = tty_std_termios; -- cgit v1.2.1 From bc8ce4afd7ee7e1421c935d24b1f879f82afdd4e Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 20 Mar 2013 17:02:02 -0600 Subject: regmap: don't corrupt work buffer in _regmap_raw_write() _regmap_raw_write() contains code to call regcache_write() to write values to the cache. That code calls memcpy() to copy the value data to the start of the work_buf. However, at least when _regmap_raw_write() is called from _regmap_bus_raw_write(), the value data is in the work_buf, and this memcpy() operation may over-write part of that value data, depending on the value of reg_bytes + pad_bytes. At least when using reg_bytes==1 and pad_bytes==0, corruption of the value data does occur. To solve this, remove the memcpy() operation, and modify the subsequent .parse_val() call to parse the original value buffer directly. At least in the case of 8-bit register address and 16-bit values, and writes of single registers at a time, this memcpy-then-parse combination used to cancel each-other out; for a work-buffer containing xx 89 03, the memcpy changed it to 89 03 03, and the parse_val changed it back to 89 89 03, thus leaving the value uncorrupted. This appears completely accidental though. Since commit 8a819ff "regmap: core: Split out in place value parsing", .parse_val only returns the parsed value, and does not modify the buffer, and hence does not (accidentally) undo the corruption caused by memcpy(). This caused bogus values to get written to HW, thus preventing e.g. audio playback on systems with a WM8903 CODEC. This patch fixes that. Signed-off-by: Stephen Warren Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 3d2367501fd0..89a920510e1d 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -943,8 +943,7 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg, unsigned int ival; int val_bytes = map->format.val_bytes; for (i = 0; i < val_len / val_bytes; i++) { - memcpy(map->work_buf, val + (i * val_bytes), val_bytes); - ival = map->format.parse_val(map->work_buf); + ival = map->format.parse_val(val + (i * val_bytes)); ret = regcache_write(map, reg + (i * map->reg_stride), ival); if (ret) { -- cgit v1.2.1 From 0f49d64c95944f5701216e900b89aab749edcda2 Mon Sep 17 00:00:00 2001 From: Avinash Patil Date: Wed, 20 Mar 2013 17:56:23 -0700 Subject: mwifiex: reset skb->data after processing PCIe sleep confirm cmd respose This patch is a bug fix for an issue wherein power save was not working for PCIe. This happens because for processing power save sleep confirm command we pull skb so that skb->data points ahead of interface header. We use same skb to get other cmda responses as well. So if we don't push skb after processing cmd response, it results into reduction in skb->len and finally skb->len reaches zero. This causes failure in processing sleep command response. Fix this by pushing skb by INTF_HEADER_LEN at the end of command response processing. Signed-off-by: Avinash Patil Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/pcie.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/wireless/mwifiex/pcie.c b/drivers/net/wireless/mwifiex/pcie.c index 5c395e2e6a2b..feb204613397 100644 --- a/drivers/net/wireless/mwifiex/pcie.c +++ b/drivers/net/wireless/mwifiex/pcie.c @@ -1508,6 +1508,7 @@ static int mwifiex_pcie_process_cmd_complete(struct mwifiex_adapter *adapter) } memcpy(adapter->upld_buf, skb->data, min_t(u32, MWIFIEX_SIZE_OF_CMD_BUFFER, skb->len)); + skb_push(skb, INTF_HEADER_LEN); if (mwifiex_map_pci_memory(adapter, skb, MWIFIEX_UPLD_SIZE, PCI_DMA_FROMDEVICE)) return -1; -- cgit v1.2.1 From 01bdcb626f80838f55ec2af993daef50b9c59c49 Mon Sep 17 00:00:00 2001 From: Robert Love Date: Mon, 25 Mar 2013 11:00:26 -0700 Subject: bnx2fc: Make the fcoe_cltr the SCSI host parent The fcoemon userspace daemon is searching for the a hostX under the the /sys/bus/fcoe/devices/ctlrX/ entries. When interfaces created using fcoe_sysfs and fcoe.ko this linkage is setup correctly, but bnx2fc is not doing the same thing and therefore fcoemon does not create the fcoe interface for bnx2fc. This patch sets up the correct linkage for bnx2fc such that fcoemon will work correctly with fcoe_sysfs and bnx2fc. Signed-off-by: Robert Love Acked-by: Bhanu Prakash Gollapudi --- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index 2daf4b0da434..cc4791cf575b 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -2133,6 +2133,7 @@ static int _bnx2fc_create(struct net_device *netdev, } ctlr = bnx2fc_to_ctlr(interface); + cdev = fcoe_ctlr_to_ctlr_dev(ctlr); interface->vlan_id = vlan_id; interface->timer_work_queue = @@ -2143,7 +2144,7 @@ static int _bnx2fc_create(struct net_device *netdev, goto ifput_err; } - lport = bnx2fc_if_create(interface, &interface->hba->pcidev->dev, 0); + lport = bnx2fc_if_create(interface, &cdev->dev, 0); if (!lport) { printk(KERN_ERR PFX "Failed to create interface (%s)\n", netdev->name); @@ -2159,8 +2160,6 @@ static int _bnx2fc_create(struct net_device *netdev, /* Make this master N_port */ ctlr->lp = lport; - cdev = fcoe_ctlr_to_ctlr_dev(ctlr); - if (link_state == BNX2FC_CREATE_LINK_UP) cdev->enabled = FCOE_CTLR_ENABLED; else -- cgit v1.2.1 From f9c4358edb285cead00a0d6cf0644c84ee773026 Mon Sep 17 00:00:00 2001 From: Robert Love Date: Mon, 25 Mar 2013 11:00:27 -0700 Subject: fcoe: Fix deadlock between create and destroy paths We can deadlock (s_active and fcoe_config_mutex) if a port is being destroyed at the same time one is being created. [ 4200.503113] ====================================================== [ 4200.503114] [ INFO: possible circular locking dependency detected ] [ 4200.503116] 3.8.0-rc5+ #8 Not tainted [ 4200.503117] ------------------------------------------------------- [ 4200.503118] kworker/3:2/2492 is trying to acquire lock: [ 4200.503119] (s_active#292){++++.+}, at: [] sysfs_addrm_finish+0x3b/0x70 [ 4200.503127] but task is already holding lock: [ 4200.503128] (fcoe_config_mutex){+.+.+.}, at: [] fcoe_destroy_work+0xe8/0x120 [fcoe] [ 4200.503133] which lock already depends on the new lock. [ 4200.503135] the existing dependency chain (in reverse order) is: [ 4200.503136] -> #1 (fcoe_config_mutex){+.+.+.}: [ 4200.503139] [] lock_acquire+0xa1/0x140 [ 4200.503143] [] mutex_lock_nested+0x6e/0x360 [ 4200.503146] [] fcoe_enable+0x1d/0xb0 [fcoe] [ 4200.503148] [] fcoe_ctlr_enabled+0x2d/0x50 [fcoe] [ 4200.503151] [] store_ctlr_enabled+0x38/0x90 [libfcoe] [ 4200.503154] [] dev_attr_store+0x18/0x30 [ 4200.503157] [] sysfs_write_file+0xe0/0x150 [ 4200.503160] [] vfs_write+0xac/0x180 [ 4200.503162] [] sys_write+0x52/0xa0 [ 4200.503164] [] system_call_fastpath+0x16/0x1b [ 4200.503167] -> #0 (s_active#292){++++.+}: [ 4200.503170] [] __lock_acquire+0x135f/0x1c90 [ 4200.503172] [] lock_acquire+0xa1/0x140 [ 4200.503174] [] sysfs_deactivate+0x116/0x160 [ 4200.503176] [] sysfs_addrm_finish+0x3b/0x70 [ 4200.503178] [] sysfs_hash_and_remove+0x5b/0xb0 [ 4200.503180] [] sysfs_remove_group+0x61/0x100 [ 4200.503183] [] device_remove_groups+0x3b/0x60 [ 4200.503185] [] device_remove_attrs+0x44/0x80 [ 4200.503187] [] device_del+0x127/0x1c0 [ 4200.503189] [] device_unregister+0x22/0x60 [ 4200.503191] [] fcoe_ctlr_device_delete+0xe0/0xf0 [libfcoe] [ 4200.503194] [] fcoe_interface_cleanup+0x6c/0xa0 [fcoe] [ 4200.503196] [] fcoe_destroy_work+0x105/0x120 [fcoe] [ 4200.503198] [] process_one_work+0x1a1/0x580 [ 4200.503203] [] worker_thread+0x15e/0x440 [ 4200.503205] [] kthread+0xea/0xf0 [ 4200.503207] [] ret_from_fork+0x7c/0xb0 [ 4200.503209] other info that might help us debug this: [ 4200.503211] Possible unsafe locking scenario: [ 4200.503212] CPU0 CPU1 [ 4200.503213] ---- ---- [ 4200.503214] lock(fcoe_config_mutex); [ 4200.503215] lock(s_active#292); [ 4200.503218] lock(fcoe_config_mutex); [ 4200.503219] lock(s_active#292); [ 4200.503221] *** DEADLOCK *** [ 4200.503223] 3 locks held by kworker/3:2/2492: [ 4200.503224] #0: (fcoe){.+.+.+}, at: [] process_one_work+0x13b/0x580 [ 4200.503228] #1: ((&port->destroy_work)){+.+.+.}, at: [] process_one_work+0x13b/0x580 [ 4200.503232] #2: (fcoe_config_mutex){+.+.+.}, at: [] fcoe_destroy_work+0xe8/0x120 [fcoe] [ 4200.503236] stack backtrace: [ 4200.503238] Pid: 2492, comm: kworker/3:2 Not tainted 3.8.0-rc5+ #8 [ 4200.503240] Call Trace: [ 4200.503243] [] print_circular_bug+0x1fb/0x20c [ 4200.503246] [] __lock_acquire+0x135f/0x1c90 [ 4200.503248] [] ? debug_check_no_locks_freed+0x9a/0x180 [ 4200.503250] [] lock_acquire+0xa1/0x140 [ 4200.503253] [] ? sysfs_addrm_finish+0x3b/0x70 [ 4200.503255] [] sysfs_deactivate+0x116/0x160 [ 4200.503258] [] ? sysfs_addrm_finish+0x3b/0x70 [ 4200.503260] [] sysfs_addrm_finish+0x3b/0x70 [ 4200.503262] [] sysfs_hash_and_remove+0x5b/0xb0 [ 4200.503265] [] sysfs_remove_group+0x61/0x100 [ 4200.503273] [] device_remove_groups+0x3b/0x60 [ 4200.503275] [] device_remove_attrs+0x44/0x80 [ 4200.503277] [] device_del+0x127/0x1c0 [ 4200.503279] [] device_unregister+0x22/0x60 [ 4200.503282] [] fcoe_ctlr_device_delete+0xe0/0xf0 [libfcoe] [ 4200.503285] [] fcoe_interface_cleanup+0x6c/0xa0 [fcoe] [ 4200.503287] [] fcoe_destroy_work+0x105/0x120 [fcoe] [ 4200.503290] [] process_one_work+0x1a1/0x580 [ 4200.503292] [] ? process_one_work+0x13b/0x580 [ 4200.503295] [] ? fcoe_if_destroy+0x230/0x230 [fcoe] [ 4200.503297] [] worker_thread+0x15e/0x440 [ 4200.503299] [] ? busy_worker_rebind_fn+0x100/0x100 [ 4200.503301] [] kthread+0xea/0xf0 [ 4200.503304] [] ? kthread_create_on_node+0x160/0x160 [ 4200.503306] [] ret_from_fork+0x7c/0xb0 [ 4200.503308] [] ? kthread_create_on_node+0x160/0x160 Signed-off-by: Robert Love Tested-by: Jack Morgan --- drivers/scsi/fcoe/fcoe.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/fcoe/fcoe.c b/drivers/scsi/fcoe/fcoe.c index b5d92fc93c70..9bfdc9a3f897 100644 --- a/drivers/scsi/fcoe/fcoe.c +++ b/drivers/scsi/fcoe/fcoe.c @@ -490,7 +490,6 @@ static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) { struct net_device *netdev = fcoe->netdev; struct fcoe_ctlr *fip = fcoe_to_ctlr(fcoe); - struct fcoe_ctlr_device *ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip); rtnl_lock(); if (!fcoe->removed) @@ -501,7 +500,6 @@ static void fcoe_interface_cleanup(struct fcoe_interface *fcoe) /* tear-down the FCoE controller */ fcoe_ctlr_destroy(fip); scsi_host_put(fip->lp->host); - fcoe_ctlr_device_delete(ctlr_dev); dev_put(netdev); module_put(THIS_MODULE); } @@ -2194,6 +2192,8 @@ out_nodev: */ static void fcoe_destroy_work(struct work_struct *work) { + struct fcoe_ctlr_device *cdev; + struct fcoe_ctlr *ctlr; struct fcoe_port *port; struct fcoe_interface *fcoe; struct Scsi_Host *shost; @@ -2224,10 +2224,15 @@ static void fcoe_destroy_work(struct work_struct *work) mutex_lock(&fcoe_config_mutex); fcoe = port->priv; + ctlr = fcoe_to_ctlr(fcoe); + cdev = fcoe_ctlr_to_ctlr_dev(ctlr); + fcoe_if_destroy(port->lport); fcoe_interface_cleanup(fcoe); mutex_unlock(&fcoe_config_mutex); + + fcoe_ctlr_device_delete(cdev); } /** @@ -2335,7 +2340,9 @@ static int _fcoe_create(struct net_device *netdev, enum fip_state fip_mode, rc = -EIO; rtnl_unlock(); fcoe_interface_cleanup(fcoe); - goto out_nortnl; + mutex_unlock(&fcoe_config_mutex); + fcoe_ctlr_device_delete(ctlr_dev); + goto out; } /* Make this the "master" N_Port */ @@ -2375,8 +2382,8 @@ static int _fcoe_create(struct net_device *netdev, enum fip_state fip_mode, out_nodev: rtnl_unlock(); -out_nortnl: mutex_unlock(&fcoe_config_mutex); +out: return rc; } -- cgit v1.2.1 From 8a9a71381208b2364a2d12b0d257ae333917a1bc Mon Sep 17 00:00:00 2001 From: Robert Love Date: Mon, 25 Mar 2013 11:00:27 -0700 Subject: libfc, fcoe, bnx2fc: Always use fcoe_disc_init for discovery layer initialization Currently libfcoe is doing some libfc discovery layer initialization outside of libfc. This patch moves this code into libfc and sets up a split in discovery (one time) initialization code and (re-configurable) settings that will come in the next patch. Signed-off-by: Robert Love Tested-by: Jack Morgan Reviewed-by: Bhanu Prakash Gollapudi --- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 2 +- drivers/scsi/fcoe/fcoe_ctlr.c | 11 ++++++----- drivers/scsi/libfc/fc_disc.c | 5 +++-- 3 files changed, 10 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index cc4791cf575b..b867b1bfa908 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -939,7 +939,7 @@ static int bnx2fc_libfc_config(struct fc_lport *lport) fc_elsct_init(lport); fc_exch_init(lport); fc_rport_init(lport); - fc_disc_init(lport); + fc_disc_init(lport, lport); return 0; } diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 08c3bc398da2..ba2f977a6e1d 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2826,6 +2826,8 @@ unlock: int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip, const struct libfc_function_template *tt, int init_fcp) { + void *priv = lport; + /* Set the function pointers set by the LLDD */ memcpy(&lport->tt, tt, sizeof(*tt)); if (init_fcp && fc_fcp_init(lport)) @@ -2842,12 +2844,11 @@ int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip, lport->tt.disc_start = fcoe_ctlr_disc_start; lport->tt.disc_stop = fcoe_ctlr_disc_stop; lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final; - mutex_init(&lport->disc.disc_mutex); - INIT_LIST_HEAD(&lport->disc.rports); - lport->disc.priv = fip; - } else { - fc_disc_init(lport); + priv = fip; } + + fc_disc_init(lport, priv); + return 0; } EXPORT_SYMBOL_GPL(fcoe_libfc_config); diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 8e561e6a557c..141c54b97082 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -714,8 +714,9 @@ static void fc_disc_stop_final(struct fc_lport *lport) /** * fc_disc_init() - Initialize the discovery layer for a local port * @lport: The local port that needs the discovery layer to be initialized + * @priv: Private data structre for users of the discovery layer */ -int fc_disc_init(struct fc_lport *lport) +int fc_disc_init(struct fc_lport *lport, void *priv) { struct fc_disc *disc; @@ -736,7 +737,7 @@ int fc_disc_init(struct fc_lport *lport) mutex_init(&disc->disc_mutex); INIT_LIST_HEAD(&disc->rports); - disc->priv = lport; + disc->priv = priv; return 0; } -- cgit v1.2.1 From 0807619d3c64d935c257a377ac86982c777f969c Mon Sep 17 00:00:00 2001 From: Robert Love Date: Mon, 25 Mar 2013 11:00:28 -0700 Subject: libfc, fcoe, bnx2fc: Split fc_disc_init into fc_disc_{init, config} Split discovery initialization in code that is setup once (fcoe_disc_init) and code that can be re-configured (fcoe_disc_config). Signed-off-by: Robert Love Tested-by: Jack Morgan Reviewed-by: Bhanu Prakash Gollapudi --- drivers/scsi/bnx2fc/bnx2fc_fcoe.c | 3 ++- drivers/scsi/fcoe/fcoe_ctlr.c | 3 ++- drivers/scsi/libfc/fc_disc.c | 25 +++++++++++++++++-------- 3 files changed, 21 insertions(+), 10 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c index b867b1bfa908..90bc7bd00966 100644 --- a/drivers/scsi/bnx2fc/bnx2fc_fcoe.c +++ b/drivers/scsi/bnx2fc/bnx2fc_fcoe.c @@ -939,7 +939,8 @@ static int bnx2fc_libfc_config(struct fc_lport *lport) fc_elsct_init(lport); fc_exch_init(lport); fc_rport_init(lport); - fc_disc_init(lport, lport); + fc_disc_init(lport); + fc_disc_config(lport, lport); return 0; } diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index ba2f977a6e1d..34ee56cf4bcc 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2847,7 +2847,8 @@ int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip, priv = fip; } - fc_disc_init(lport, priv); + fc_disc_init(lport); + fc_disc_config(lport, priv); return 0; } diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 141c54b97082..880a9068ca12 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -712,13 +712,13 @@ static void fc_disc_stop_final(struct fc_lport *lport) } /** - * fc_disc_init() - Initialize the discovery layer for a local port - * @lport: The local port that needs the discovery layer to be initialized + * fc_disc_config() - Configure the discovery layer for a local port + * @lport: The local port that needs the discovery layer to be configured * @priv: Private data structre for users of the discovery layer */ -int fc_disc_init(struct fc_lport *lport, void *priv) +void fc_disc_config(struct fc_lport *lport, void *priv) { - struct fc_disc *disc; + struct fc_disc *disc = &lport->disc; if (!lport->tt.disc_start) lport->tt.disc_start = fc_disc_start; @@ -733,12 +733,21 @@ int fc_disc_init(struct fc_lport *lport, void *priv) lport->tt.disc_recv_req = fc_disc_recv_req; disc = &lport->disc; - INIT_DELAYED_WORK(&disc->disc_work, fc_disc_timeout); - mutex_init(&disc->disc_mutex); - INIT_LIST_HEAD(&disc->rports); disc->priv = priv; +} +EXPORT_SYMBOL(fc_disc_config); - return 0; +/** + * fc_disc_init() - Initialize the discovery layer for a local port + * @lport: The local port that needs the discovery layer to be initialized + */ +void fc_disc_init(struct fc_lport *lport) +{ + struct fc_disc *disc = &lport->disc; + + INIT_DELAYED_WORK(&disc->disc_work, fc_disc_timeout); + mutex_init(&disc->disc_mutex); + INIT_LIST_HEAD(&disc->rports); } EXPORT_SYMBOL(fc_disc_init); -- cgit v1.2.1 From 0db0e377ab5be5d507a2fca3d78215cd2e83b974 Mon Sep 17 00:00:00 2001 From: Robert Love Date: Mon, 25 Mar 2013 11:00:28 -0700 Subject: libfcoe: Fix fcoe_sysfs VN2VN mode The libfc discovery layer is being initialized in the 'create' paths for both legacy libfcoe module parameters and fcoe_sysfs control interfaces. The problem is that for VN2VN mode the discovery layer is initialized as if it were in 'fabric' mode and it is not re-configured when the mode is changed to 'vn2vn'. This patch splits out code that needs to be initialized once and code that can, and should be, re-configured when the mode changes. Additionally this patch makes that change so that the discovery layer can be reconfigured to the libfcoe implementation when in 'vn2vn' mode. Signed-off-by: Robert Love Tested-by: Jack Morgan Reviewed-by: Bhanu Prakash Gollapudi --- drivers/scsi/fcoe/fcoe_ctlr.c | 60 ++++++++++++++++++++++++++++++++----------- 1 file changed, 45 insertions(+), 15 deletions(-) (limited to 'drivers') diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c index 34ee56cf4bcc..a76247201be5 100644 --- a/drivers/scsi/fcoe/fcoe_ctlr.c +++ b/drivers/scsi/fcoe/fcoe_ctlr.c @@ -2814,6 +2814,47 @@ unlock: fc_lport_set_local_id(fip->lp, new_port_id); } +/** + * fcoe_ctlr_mode_set() - Set or reset the ctlr's mode + * @lport: The local port to be (re)configured + * @fip: The FCoE controller whose mode is changing + * @fip_mode: The new fip mode + * + * Note that the we shouldn't be changing the libfc discovery settings + * (fc_disc_config) while an lport is going through the libfc state + * machine. The mode can only be changed when a fcoe_ctlr device is + * disabled, so that should ensure that this routine is only called + * when nothing is happening. + */ +void fcoe_ctlr_mode_set(struct fc_lport *lport, struct fcoe_ctlr *fip, + enum fip_state fip_mode) +{ + void *priv; + + WARN_ON(lport->state != LPORT_ST_RESET && + lport->state != LPORT_ST_DISABLED); + + if (fip_mode == FIP_MODE_VN2VN) { + lport->rport_priv_size = sizeof(struct fcoe_rport); + lport->point_to_multipoint = 1; + lport->tt.disc_recv_req = fcoe_ctlr_disc_recv; + lport->tt.disc_start = fcoe_ctlr_disc_start; + lport->tt.disc_stop = fcoe_ctlr_disc_stop; + lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final; + priv = fip; + } else { + lport->rport_priv_size = 0; + lport->point_to_multipoint = 0; + lport->tt.disc_recv_req = NULL; + lport->tt.disc_start = NULL; + lport->tt.disc_stop = NULL; + lport->tt.disc_stop_final = NULL; + priv = lport; + } + + fc_disc_config(lport, priv); +} + /** * fcoe_libfc_config() - Sets up libfc related properties for local port * @lport: The local port to configure libfc for @@ -2826,8 +2867,6 @@ unlock: int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip, const struct libfc_function_template *tt, int init_fcp) { - void *priv = lport; - /* Set the function pointers set by the LLDD */ memcpy(&lport->tt, tt, sizeof(*tt)); if (init_fcp && fc_fcp_init(lport)) @@ -2835,21 +2874,9 @@ int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip, fc_exch_init(lport); fc_elsct_init(lport); fc_lport_init(lport); - if (fip->mode == FIP_MODE_VN2VN) - lport->rport_priv_size = sizeof(struct fcoe_rport); fc_rport_init(lport); - if (fip->mode == FIP_MODE_VN2VN) { - lport->point_to_multipoint = 1; - lport->tt.disc_recv_req = fcoe_ctlr_disc_recv; - lport->tt.disc_start = fcoe_ctlr_disc_start; - lport->tt.disc_stop = fcoe_ctlr_disc_stop; - lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final; - priv = fip; - } - fc_disc_init(lport); - fc_disc_config(lport, priv); - + fcoe_ctlr_mode_set(lport, fip, fip->mode); return 0; } EXPORT_SYMBOL_GPL(fcoe_libfc_config); @@ -2877,6 +2904,7 @@ EXPORT_SYMBOL(fcoe_fcf_get_selected); void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *ctlr_dev) { struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev); + struct fc_lport *lport = ctlr->lp; mutex_lock(&ctlr->ctlr_mutex); switch (ctlr_dev->mode) { @@ -2890,5 +2918,7 @@ void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *ctlr_dev) } mutex_unlock(&ctlr->ctlr_mutex); + + fcoe_ctlr_mode_set(lport, ctlr, ctlr->mode); } EXPORT_SYMBOL(fcoe_ctlr_set_fip_mode); -- cgit v1.2.1 From bd17381372c0740c43a9addf0d80271f647f2b38 Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Mon, 25 Mar 2013 11:24:10 +0100 Subject: drm/i915: duct-tape locking when eDP init fails Thanks to apple gpu mux fail we detect an eDP output, but can't read anything over dp aux. In the resulting failure path we then hit a paranoid WARN about potential locking. Since the WARN is pretty useful for normal operation just paper over it in the failure case by grabbing the demanded (but for init/teardown not really required) lock. I've checked our driver unload code and we already don't hold the kms lock when calling drm_mode_config_cleanup. So this won't lead to a new deadlock when reloading i915.ko. v2: Make it compile. Reported-by: Dave Airlie Cc: Dave Airlie Reviewed-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dp.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c index d7d4afe01341..8fc93f90a7cd 100644 --- a/drivers/gpu/drm/i915/intel_dp.c +++ b/drivers/gpu/drm/i915/intel_dp.c @@ -2559,12 +2559,15 @@ void intel_dp_encoder_destroy(struct drm_encoder *encoder) { struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder); struct intel_dp *intel_dp = &intel_dig_port->dp; + struct drm_device *dev = intel_dp_to_dev(intel_dp); i2c_del_adapter(&intel_dp->adapter); drm_encoder_cleanup(encoder); if (is_edp(intel_dp)) { cancel_delayed_work_sync(&intel_dp->panel_vdd_work); + mutex_lock(&dev->mode_config.mutex); ironlake_panel_vdd_off_sync(intel_dp); + mutex_unlock(&dev->mode_config.mutex); } kfree(intel_dig_port); } -- cgit v1.2.1 From 637f44d24f8868ee5a597a99e7874fdd150d4cba Mon Sep 17 00:00:00 2001 From: Adam Jackson Date: Mon, 25 Mar 2013 15:40:05 -0400 Subject: drm/i915: Be sure to turn hsync/vsync back on at crt enable (v2) commit f40ebd6bcbbd0d30591f42dc16be52b5086a366b Author: Patrik Jakobsson Date: Tue Mar 5 14:24:48 2013 +0100 drm/i915: Turn off hsync and vsync on ADPA when disabling crt properly disabled the hsync/vsync logic at disable time, but neglected to re-enable them at enable time. v2: In the enable hook, restore the connector's expected DPMS level instead of forcing ON. Do this by stashing a back pointer to the connector in the crt (suggested by danvet) since otherwise it's awkward to look up. Signed-off-by: Adam Jackson Cc: stable@vger.kernel.org [danvet: Added more verbose commit citation and cc: stable tag. Also, make it compile. Then self-lart and try to assign the right pointer.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_crt.c | 40 +++++++++++++++++----------------------- 1 file changed, 17 insertions(+), 23 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/intel_crt.c b/drivers/gpu/drm/i915/intel_crt.c index 32a3693905ec..1ce45a0a2d3e 100644 --- a/drivers/gpu/drm/i915/intel_crt.c +++ b/drivers/gpu/drm/i915/intel_crt.c @@ -45,6 +45,9 @@ struct intel_crt { struct intel_encoder base; + /* DPMS state is stored in the connector, which we need in the + * encoder's enable/disable callbacks */ + struct intel_connector *connector; bool force_hotplug_required; u32 adpa_reg; }; @@ -81,29 +84,6 @@ static bool intel_crt_get_hw_state(struct intel_encoder *encoder, return true; } -static void intel_disable_crt(struct intel_encoder *encoder) -{ - struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; - struct intel_crt *crt = intel_encoder_to_crt(encoder); - u32 temp; - - temp = I915_READ(crt->adpa_reg); - temp |= ADPA_HSYNC_CNTL_DISABLE | ADPA_VSYNC_CNTL_DISABLE; - temp &= ~ADPA_DAC_ENABLE; - I915_WRITE(crt->adpa_reg, temp); -} - -static void intel_enable_crt(struct intel_encoder *encoder) -{ - struct drm_i915_private *dev_priv = encoder->base.dev->dev_private; - struct intel_crt *crt = intel_encoder_to_crt(encoder); - u32 temp; - - temp = I915_READ(crt->adpa_reg); - temp |= ADPA_DAC_ENABLE; - I915_WRITE(crt->adpa_reg, temp); -} - /* Note: The caller is required to filter out dpms modes not supported by the * platform. */ static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode) @@ -135,6 +115,19 @@ static void intel_crt_set_dpms(struct intel_encoder *encoder, int mode) I915_WRITE(crt->adpa_reg, temp); } +static void intel_disable_crt(struct intel_encoder *encoder) +{ + intel_crt_set_dpms(encoder, DRM_MODE_DPMS_OFF); +} + +static void intel_enable_crt(struct intel_encoder *encoder) +{ + struct intel_crt *crt = intel_encoder_to_crt(encoder); + + intel_crt_set_dpms(encoder, crt->connector->base.dpms); +} + + static void intel_crt_dpms(struct drm_connector *connector, int mode) { struct drm_device *dev = connector->dev; @@ -746,6 +739,7 @@ void intel_crt_init(struct drm_device *dev) } connector = &intel_connector->base; + crt->connector = intel_connector; drm_connector_init(dev, &intel_connector->base, &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); -- cgit v1.2.1 From fffe01f7a768d07cc50ace71abe28fbf2f786a43 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 26 Mar 2013 17:25:54 -0400 Subject: PCI: Add PCI ROM helper for platform-provided ROM images MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It turns out that some UEFI systems provide apparently an apparently valid PCI ROM BAR that turns out to contain garbage, so the attempt in 547b52463 to prefer the ROM from the BAR actually breaks a different set of machines. As Linus pointed out, the graphics drivers are probably in the best position to make this judgement, so this basically reverts 547b52463 and f9a37be0f and adds a new helper function. Followup patches will add support to nouveau and radeon for probing this ROM source if they can't find a ROM from some other source. [bhelgaas: added reporter and bugzilla pointers, s/f4eb5ff05/547b52463] Reference: https://bugzilla.redhat.com/show_bug.cgi?id=927451 Reference: http://lkml.kernel.org/r/kg69ef$vdb$1@ger.gmane.org Reported-by: Mantas Mikulėnas Reported-by: Chris Murphy Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas --- drivers/pci/rom.c | 67 +++++++++++++++++++++++++------------------------------ 1 file changed, 31 insertions(+), 36 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/rom.c b/drivers/pci/rom.c index b41ac7756a4b..c5d0a08a8747 100644 --- a/drivers/pci/rom.c +++ b/drivers/pci/rom.c @@ -100,27 +100,6 @@ size_t pci_get_rom_size(struct pci_dev *pdev, void __iomem *rom, size_t size) return min((size_t)(image - rom), size); } -static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size) -{ - struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - loff_t start; - - /* assign the ROM an address if it doesn't have one */ - if (res->parent == NULL && pci_assign_resource(pdev, PCI_ROM_RESOURCE)) - return 0; - start = pci_resource_start(pdev, PCI_ROM_RESOURCE); - *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); - - if (*size == 0) - return 0; - - /* Enable ROM space decodes */ - if (pci_enable_rom(pdev)) - return 0; - - return start; -} - /** * pci_map_rom - map a PCI ROM to kernel space * @pdev: pointer to pci device struct @@ -135,7 +114,7 @@ static loff_t pci_find_rom(struct pci_dev *pdev, size_t *size) void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) { struct resource *res = &pdev->resource[PCI_ROM_RESOURCE]; - loff_t start = 0; + loff_t start; void __iomem *rom; /* @@ -154,21 +133,21 @@ void __iomem *pci_map_rom(struct pci_dev *pdev, size_t *size) return (void __iomem *)(unsigned long) pci_resource_start(pdev, PCI_ROM_RESOURCE); } else { - start = pci_find_rom(pdev, size); - } - } + /* assign the ROM an address if it doesn't have one */ + if (res->parent == NULL && + pci_assign_resource(pdev,PCI_ROM_RESOURCE)) + return NULL; + start = pci_resource_start(pdev, PCI_ROM_RESOURCE); + *size = pci_resource_len(pdev, PCI_ROM_RESOURCE); + if (*size == 0) + return NULL; - /* - * Some devices may provide ROMs via a source other than the BAR - */ - if (!start && pdev->rom && pdev->romlen) { - *size = pdev->romlen; - return phys_to_virt(pdev->rom); + /* Enable ROM space decodes */ + if (pci_enable_rom(pdev)) + return NULL; + } } - if (!start) - return NULL; - rom = ioremap(start, *size); if (!rom) { /* restore enable if ioremap fails */ @@ -202,8 +181,7 @@ void pci_unmap_rom(struct pci_dev *pdev, void __iomem *rom) if (res->flags & (IORESOURCE_ROM_COPY | IORESOURCE_ROM_BIOS_COPY)) return; - if (!pdev->rom || !pdev->romlen) - iounmap(rom); + iounmap(rom); /* Disable again before continuing, leave enabled if pci=rom */ if (!(res->flags & (IORESOURCE_ROM_ENABLE | IORESOURCE_ROM_SHADOW))) @@ -227,7 +205,24 @@ void pci_cleanup_rom(struct pci_dev *pdev) } } +/** + * pci_platform_rom - provides a pointer to any ROM image provided by the + * platform + * @pdev: pointer to pci device struct + * @size: pointer to receive size of pci window over ROM + */ +void __iomem *pci_platform_rom(struct pci_dev *pdev, size_t *size) +{ + if (pdev->rom && pdev->romlen) { + *size = pdev->romlen; + return phys_to_virt((phys_addr_t)pdev->rom); + } + + return NULL; +} + EXPORT_SYMBOL(pci_map_rom); EXPORT_SYMBOL(pci_unmap_rom); EXPORT_SYMBOL_GPL(pci_enable_rom); EXPORT_SYMBOL_GPL(pci_disable_rom); +EXPORT_SYMBOL(pci_platform_rom); -- cgit v1.2.1 From 2ab3a749eb14c96eaf453afe6e678c9c1dab1637 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Tue, 5 Mar 2013 09:06:58 +0100 Subject: gpio-ich: Fix value returned by ichx_gpio_request Per Documentation/gpio.txt, gpio_request callbacks should return 0 on success or a negative value on error. So it is not clear what was meant by letting ichx_gpio_request return 1 in some cases, nor how a caller would interpret it. Align the code with the comment above it and consider pins as available by default. Signed-off-by: Jean Delvare Cc: Grant Likely Acked-by: Peter Tyser Signed-off-by: Linus Walleij --- drivers/gpio/gpio-ich.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c index f9dbd503fc40..de3c317bd3e2 100644 --- a/drivers/gpio/gpio-ich.c +++ b/drivers/gpio/gpio-ich.c @@ -214,7 +214,7 @@ static int ichx_gpio_request(struct gpio_chip *chip, unsigned nr) * If it can't be trusted, assume that the pin can be used as a GPIO. */ if (ichx_priv.desc->use_sel_ignore[nr / 32] & (1 << (nr & 0x1f))) - return 1; + return 0; return ichx_read_bit(GPIO_USE_SEL, nr) ? 0 : -ENODEV; } -- cgit v1.2.1 From d6b057b5dbba97e6ba13aace5270babd7c8b658c Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Wed, 20 Mar 2013 08:59:35 +0000 Subject: e1000: ethtool: Add missing dma_mapping_error-call in e1000_setup_desc_rings After dma_map_single, dma_mapping_error must be called. Signed-off-by: Christoph Paasch Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000/e1000_ethtool.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c index 43462d596a4e..ffd287196bf8 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_ethtool.c +++ b/drivers/net/ethernet/intel/e1000/e1000_ethtool.c @@ -1053,6 +1053,10 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter) txdr->buffer_info[i].dma = dma_map_single(&pdev->dev, skb->data, skb->len, DMA_TO_DEVICE); + if (dma_mapping_error(&pdev->dev, txdr->buffer_info[i].dma)) { + ret_val = 4; + goto err_nomem; + } tx_desc->buffer_addr = cpu_to_le64(txdr->buffer_info[i].dma); tx_desc->lower.data = cpu_to_le32(skb->len); tx_desc->lower.data |= cpu_to_le32(E1000_TXD_CMD_EOP | @@ -1069,7 +1073,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter) rxdr->buffer_info = kcalloc(rxdr->count, sizeof(struct e1000_buffer), GFP_KERNEL); if (!rxdr->buffer_info) { - ret_val = 4; + ret_val = 5; goto err_nomem; } @@ -1077,7 +1081,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter) rxdr->desc = dma_alloc_coherent(&pdev->dev, rxdr->size, &rxdr->dma, GFP_KERNEL); if (!rxdr->desc) { - ret_val = 5; + ret_val = 6; goto err_nomem; } memset(rxdr->desc, 0, rxdr->size); @@ -1101,7 +1105,7 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter) skb = alloc_skb(E1000_RXBUFFER_2048 + NET_IP_ALIGN, GFP_KERNEL); if (!skb) { - ret_val = 6; + ret_val = 7; goto err_nomem; } skb_reserve(skb, NET_IP_ALIGN); @@ -1110,6 +1114,10 @@ static int e1000_setup_desc_rings(struct e1000_adapter *adapter) rxdr->buffer_info[i].dma = dma_map_single(&pdev->dev, skb->data, E1000_RXBUFFER_2048, DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, rxdr->buffer_info[i].dma)) { + ret_val = 8; + goto err_nomem; + } rx_desc->buffer_addr = cpu_to_le64(rxdr->buffer_info[i].dma); memset(skb->data, 0x00, skb->len); } -- cgit v1.2.1 From 065946c65a61943b4c609a0a1b1bac6742b3b593 Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Wed, 20 Mar 2013 08:59:41 +0000 Subject: ixgb: Add missing dma_mapping_error-call in ixgb_alloc_rx_buffers After dma_map_single, dma_mapping_error must be called. It seems safe to not free the skb allocated in this function, as the skb can be reused later. Additionally this patch fixes one coding-style error. Signed-off-by: Christoph Paasch Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/ixgb/ixgb_main.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c index ea4808373435..b5f94abe3cff 100644 --- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c +++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c @@ -2159,6 +2159,10 @@ map_skb: skb->data, adapter->rx_buffer_len, DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { + adapter->alloc_rx_buff_failed++; + break; + } rx_desc = IXGB_RX_DESC(*rx_ring, i); rx_desc->buff_addr = cpu_to_le64(buffer_info->dma); @@ -2168,7 +2172,8 @@ map_skb: rx_desc->status = 0; - if (++i == rx_ring->count) i = 0; + if (++i == rx_ring->count) + i = 0; buffer_info = &rx_ring->buffer_info[i]; } -- cgit v1.2.1 From 9afd9b7090225d78ef56423a2ff65354dc38f1b1 Mon Sep 17 00:00:00 2001 From: Gabriel Fernandez Date: Mon, 18 Mar 2013 11:45:05 +0100 Subject: gpio: stmpe: pass DT node to irqdomain The irq domain was implemented but the device tree node was not transmitted to irq_domain_add_simple(). Cc: stable@vger.kernel.org Signed-off-by: Gabriel Fernandez Signed-off-by: Linus Walleij --- drivers/gpio/gpio-stmpe.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c index 770476a9da87..3ce5bc38ac31 100644 --- a/drivers/gpio/gpio-stmpe.c +++ b/drivers/gpio/gpio-stmpe.c @@ -307,11 +307,15 @@ static const struct irq_domain_ops stmpe_gpio_irq_simple_ops = { .xlate = irq_domain_xlate_twocell, }; -static int stmpe_gpio_irq_init(struct stmpe_gpio *stmpe_gpio) +static int stmpe_gpio_irq_init(struct stmpe_gpio *stmpe_gpio, + struct device_node *np) { - int base = stmpe_gpio->irq_base; + int base = 0; - stmpe_gpio->domain = irq_domain_add_simple(NULL, + if (!np) + base = stmpe_gpio->irq_base; + + stmpe_gpio->domain = irq_domain_add_simple(np, stmpe_gpio->chip.ngpio, base, &stmpe_gpio_irq_simple_ops, stmpe_gpio); if (!stmpe_gpio->domain) { @@ -346,6 +350,9 @@ static int stmpe_gpio_probe(struct platform_device *pdev) stmpe_gpio->chip = template_chip; stmpe_gpio->chip.ngpio = stmpe->num_gpios; stmpe_gpio->chip.dev = &pdev->dev; +#ifdef CONFIG_OF + stmpe_gpio->chip.of_node = np; +#endif stmpe_gpio->chip.base = pdata ? pdata->gpio_base : -1; if (pdata) @@ -366,7 +373,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev) goto out_free; if (irq >= 0) { - ret = stmpe_gpio_irq_init(stmpe_gpio); + ret = stmpe_gpio_irq_init(stmpe_gpio, np); if (ret) goto out_disable; -- cgit v1.2.1 From 37287fae7e4506fb0822523587c769783164cdd6 Mon Sep 17 00:00:00 2001 From: Christoph Paasch Date: Wed, 20 Mar 2013 08:59:46 +0000 Subject: e1000e: Add missing dma_mapping_error-call in e1000_alloc_jumbo_rx_buffers After dma_map_page, dma_mapping_error must be called. It seems safe to not free the skb/page allocated in this function, as the skb/page can be reused later. Signed-off-by: Christoph Paasch Tested-by: Aaron Brown Signed-off-by: Jeff Kirsher --- drivers/net/ethernet/intel/e1000e/netdev.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c index 948b86ffa4f0..7e615e2bf7e6 100644 --- a/drivers/net/ethernet/intel/e1000e/netdev.c +++ b/drivers/net/ethernet/intel/e1000e/netdev.c @@ -848,11 +848,16 @@ check_page: } } - if (!buffer_info->dma) + if (!buffer_info->dma) { buffer_info->dma = dma_map_page(&pdev->dev, buffer_info->page, 0, PAGE_SIZE, DMA_FROM_DEVICE); + if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { + adapter->alloc_rx_buff_failed++; + break; + } + } rx_desc = E1000_RX_DESC_EXT(*rx_ring, i); rx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); -- cgit v1.2.1 From f901b6bc404b67d96eca739857c097e022727b71 Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Wed, 27 Mar 2013 11:36:42 +0100 Subject: can: sja1000: fix define conflict on SH Thias patch fixes a define conflict between the SH architecture and the sja1000 driver: drivers/net/can/sja1000/sja1000.h:59:0: warning: "REG_SR" redefined [enabled by default] arch/sh/include/asm/ptrace_32.h:25:0: note: this is the location of the previous definition A SJA1000_ prefix is added to the offending sja1000 define only, to make a minimal patch suited for stable. A later patch will add a SJA1000_ prefix to all defines in sja1000.h. Cc: linux-stable Reported-by: Fengguang Wu Signed-off-by: Marc Kleine-Budde --- drivers/net/can/sja1000/plx_pci.c | 4 ++-- drivers/net/can/sja1000/sja1000.c | 6 +++--- drivers/net/can/sja1000/sja1000.h | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/net/can/sja1000/plx_pci.c b/drivers/net/can/sja1000/plx_pci.c index a042cdc260dc..3c18d7d000ed 100644 --- a/drivers/net/can/sja1000/plx_pci.c +++ b/drivers/net/can/sja1000/plx_pci.c @@ -348,7 +348,7 @@ static inline int plx_pci_check_sja1000(const struct sja1000_priv *priv) */ if ((priv->read_reg(priv, REG_CR) & REG_CR_BASICCAN_INITIAL_MASK) == REG_CR_BASICCAN_INITIAL && - (priv->read_reg(priv, REG_SR) == REG_SR_BASICCAN_INITIAL) && + (priv->read_reg(priv, SJA1000_REG_SR) == REG_SR_BASICCAN_INITIAL) && (priv->read_reg(priv, REG_IR) == REG_IR_BASICCAN_INITIAL)) flag = 1; @@ -360,7 +360,7 @@ static inline int plx_pci_check_sja1000(const struct sja1000_priv *priv) * See states on p. 23 of the Datasheet. */ if (priv->read_reg(priv, REG_MOD) == REG_MOD_PELICAN_INITIAL && - priv->read_reg(priv, REG_SR) == REG_SR_PELICAN_INITIAL && + priv->read_reg(priv, SJA1000_REG_SR) == REG_SR_PELICAN_INITIAL && priv->read_reg(priv, REG_IR) == REG_IR_PELICAN_INITIAL) return flag; diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index daf4013a8fc7..e4df307eaa90 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -92,7 +92,7 @@ static void sja1000_write_cmdreg(struct sja1000_priv *priv, u8 val) */ spin_lock_irqsave(&priv->cmdreg_lock, flags); priv->write_reg(priv, REG_CMR, val); - priv->read_reg(priv, REG_SR); + priv->read_reg(priv, SJA1000_REG_SR); spin_unlock_irqrestore(&priv->cmdreg_lock, flags); } @@ -502,7 +502,7 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id) while ((isrc = priv->read_reg(priv, REG_IR)) && (n < SJA1000_MAX_IRQ)) { n++; - status = priv->read_reg(priv, REG_SR); + status = priv->read_reg(priv, SJA1000_REG_SR); /* check for absent controller due to hw unplug */ if (status == 0xFF && sja1000_is_absent(priv)) return IRQ_NONE; @@ -530,7 +530,7 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id) /* receive interrupt */ while (status & SR_RBS) { sja1000_rx(dev); - status = priv->read_reg(priv, REG_SR); + status = priv->read_reg(priv, SJA1000_REG_SR); /* check for absent controller */ if (status == 0xFF && sja1000_is_absent(priv)) return IRQ_NONE; diff --git a/drivers/net/can/sja1000/sja1000.h b/drivers/net/can/sja1000/sja1000.h index afa99847a510..aa48e053da27 100644 --- a/drivers/net/can/sja1000/sja1000.h +++ b/drivers/net/can/sja1000/sja1000.h @@ -56,7 +56,7 @@ /* SJA1000 registers - manual section 6.4 (Pelican Mode) */ #define REG_MOD 0x00 #define REG_CMR 0x01 -#define REG_SR 0x02 +#define SJA1000_REG_SR 0x02 #define REG_IR 0x03 #define REG_IER 0x04 #define REG_ALC 0x0B -- cgit v1.2.1 From f951b6587b94df2abb8c7a2425f7dcdb4fe647dc Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 27 Mar 2013 13:08:44 +0000 Subject: regmap: async: Add missing return Let's only write once... Signed-off-by: Mark Brown --- drivers/base/regmap/regmap.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'drivers') diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 3d2367501fd0..dd82acfbcf4e 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -1036,6 +1036,8 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg, kfree(async->work_buf); kfree(async); } + + return ret; } trace_regmap_hw_write_start(map->dev, reg, -- cgit v1.2.1 From 9beb09f1cadf33145c307c504f844ae24686c872 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Mon, 4 Mar 2013 20:44:39 -0800 Subject: fbdev: sh_mobile_lcdc: fixup B side hsync adjust settings The lcdc B side horizon output is shifted if sh_mobile_lcdc_pan() was called. This patch fixup this issue. It is tested on R8A7740 Armadillo800eva HDMI output. Special thanks to Fukushima-san, and Sano-san Reported-by: Osamu Fukushima Signed-off-by: Hideyuki Sano Signed-off-by: Kuninori Morimoto Acked-by: Laurent Pinchart Signed-off-by: Simon Horman --- drivers/video/sh_mobile_lcdcfb.c | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/video/sh_mobile_lcdcfb.c b/drivers/video/sh_mobile_lcdcfb.c index 63203acef812..0264704a52be 100644 --- a/drivers/video/sh_mobile_lcdcfb.c +++ b/drivers/video/sh_mobile_lcdcfb.c @@ -858,6 +858,7 @@ static void sh_mobile_lcdc_geometry(struct sh_mobile_lcdc_chan *ch) tmp = ((mode->xres & 7) << 24) | ((display_h_total & 7) << 16) | ((mode->hsync_len & 7) << 8) | (hsync_pos & 7); lcdc_write_chan(ch, LDHAJR, tmp); + lcdc_write_chan_mirror(ch, LDHAJR, tmp); } static void sh_mobile_lcdc_overlay_setup(struct sh_mobile_lcdc_overlay *ovl) -- cgit v1.2.1 From 3fd33497f80aa528ded0db2851b48638635d5caa Mon Sep 17 00:00:00 2001 From: Marc Kleine-Budde Date: Wed, 27 Mar 2013 12:47:13 +0100 Subject: can: sja1000: limit PEAK PCAN-PC Card to HAS_IOPORT This patch limits the PEAK PCAN-PC Card driver to systems with ioports. Fixes a compile time breakage on SH: drivers/net/can/sja1000/peak_pcmcia.c:626:2: error: implicit declaration of function 'ioport_unmap' Reported-by: Fengguang Wu Cc: Paul Mundt Signed-off-by: Marc Kleine-Budde --- drivers/net/can/sja1000/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers') diff --git a/drivers/net/can/sja1000/Kconfig b/drivers/net/can/sja1000/Kconfig index b39ca5b3ea7f..ff2ba86cd4a4 100644 --- a/drivers/net/can/sja1000/Kconfig +++ b/drivers/net/can/sja1000/Kconfig @@ -46,6 +46,7 @@ config CAN_EMS_PCI config CAN_PEAK_PCMCIA tristate "PEAK PCAN-PC Card" depends on PCMCIA + depends on HAS_IOPORT ---help--- This driver is for the PCAN-PC Card PCMCIA adapter (1 or 2 channels) from PEAK-System (http://www.peak-system.com). To compile this -- cgit v1.2.1 From 27b7c63a7c509d797c151e95a641e1d94d94bbd9 Mon Sep 17 00:00:00 2001 From: Lauri Kasanen Date: Wed, 27 Mar 2013 15:04:55 +0200 Subject: drm/i915: Fix build failure ERROR: "__build_bug_on_failed" [drivers/gpu/drm/i915/i915.ko] undefined! Originally reported at http://www.gossamer-threads.com/lists/linux/kernel/1631803 FDO bug #62775 This needs to be backported to both 3.7 and 3.8 stable trees. Doesn't apply straight, but it's a quick change. Signed-off-by: Lauri Kasanen Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=62775 Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c index 3b11ab0fbc96..9a48e1a2d417 100644 --- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c +++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c @@ -57,7 +57,7 @@ eb_create(struct drm_i915_gem_execbuffer2 *args) if (eb == NULL) { int size = args->buffer_count; int count = PAGE_SIZE / sizeof(struct hlist_head) / 2; - BUILD_BUG_ON(!is_power_of_2(PAGE_SIZE / sizeof(struct hlist_head))); + BUILD_BUG_ON_NOT_POWER_OF_2(PAGE_SIZE / sizeof(struct hlist_head)); while (count > 2*size) count >>= 1; eb = kzalloc(count*sizeof(struct hlist_head) + -- cgit v1.2.1 From 54683441a92ebe20c5282465ea6f21e5e74d2974 Mon Sep 17 00:00:00 2001 From: "John W. Linville" Date: Wed, 27 Mar 2013 10:52:11 -0400 Subject: Revert "brcmsmac: support 4313iPA" This reverts commit b6fc28a158076ca2764edc9a6d1e1402f56e1c0c. This commit is reported to cause a regression in the support for some revisions of 4313 ePA devices. http://marc.info/?l=linux-wireless&m=136360340200943&w=2 Conflicts: drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c Reported-by: David Herrmann Signed-off-by: John W. Linville --- .../net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c | 369 ++++++++------------- .../wireless/brcm80211/brcmsmac/phy/phytbl_lcn.c | 64 ++-- 2 files changed, 162 insertions(+), 271 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c index 21a824232478..18d37645e2cd 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phy_lcn.c @@ -1137,9 +1137,8 @@ wlc_lcnphy_set_rx_gain_by_distribution(struct brcms_phy *pi, gain0_15 = ((biq1 & 0xf) << 12) | ((tia & 0xf) << 8) | ((lna2 & 0x3) << 6) | - ((lna2 & 0x3) << 4) | - ((lna1 & 0x3) << 2) | - ((lna1 & 0x3) << 0); + ((lna2 & + 0x3) << 4) | ((lna1 & 0x3) << 2) | ((lna1 & 0x3) << 0); mod_phy_reg(pi, 0x4b6, (0xffff << 0), gain0_15 << 0); mod_phy_reg(pi, 0x4b7, (0xf << 0), gain16_19 << 0); @@ -1157,8 +1156,6 @@ wlc_lcnphy_set_rx_gain_by_distribution(struct brcms_phy *pi, } mod_phy_reg(pi, 0x44d, (0x1 << 0), (!trsw) << 0); - mod_phy_reg(pi, 0x4b1, (0x3 << 11), lna1 << 11); - mod_phy_reg(pi, 0x4e6, (0x3 << 3), lna1 << 3); } @@ -1331,43 +1328,6 @@ static u32 wlc_lcnphy_measure_digital_power(struct brcms_phy *pi, u16 nsamples) return (iq_est.i_pwr + iq_est.q_pwr) / nsamples; } -static bool wlc_lcnphy_rx_iq_cal_gain(struct brcms_phy *pi, u16 biq1_gain, - u16 tia_gain, u16 lna2_gain) -{ - u32 i_thresh_l, q_thresh_l; - u32 i_thresh_h, q_thresh_h; - struct lcnphy_iq_est iq_est_h, iq_est_l; - - wlc_lcnphy_set_rx_gain_by_distribution(pi, 0, 0, 0, biq1_gain, tia_gain, - lna2_gain, 0); - - wlc_lcnphy_rx_gain_override_enable(pi, true); - wlc_lcnphy_start_tx_tone(pi, 2000, (40 >> 1), 0); - udelay(500); - write_radio_reg(pi, RADIO_2064_REG112, 0); - if (!wlc_lcnphy_rx_iq_est(pi, 1024, 32, &iq_est_l)) - return false; - - wlc_lcnphy_start_tx_tone(pi, 2000, 40, 0); - udelay(500); - write_radio_reg(pi, RADIO_2064_REG112, 0); - if (!wlc_lcnphy_rx_iq_est(pi, 1024, 32, &iq_est_h)) - return false; - - i_thresh_l = (iq_est_l.i_pwr << 1); - i_thresh_h = (iq_est_l.i_pwr << 2) + iq_est_l.i_pwr; - - q_thresh_l = (iq_est_l.q_pwr << 1); - q_thresh_h = (iq_est_l.q_pwr << 2) + iq_est_l.q_pwr; - if ((iq_est_h.i_pwr > i_thresh_l) && - (iq_est_h.i_pwr < i_thresh_h) && - (iq_est_h.q_pwr > q_thresh_l) && - (iq_est_h.q_pwr < q_thresh_h)) - return true; - - return false; -} - static bool wlc_lcnphy_rx_iq_cal(struct brcms_phy *pi, const struct lcnphy_rx_iqcomp *iqcomp, @@ -1382,8 +1342,8 @@ wlc_lcnphy_rx_iq_cal(struct brcms_phy *pi, RFOverrideVal0_old, rfoverride2_old, rfoverride2val_old, rfoverride3_old, rfoverride3val_old, rfoverride4_old, rfoverride4val_old, afectrlovr_old, afectrlovrval_old; - int tia_gain, lna2_gain, biq1_gain; - bool set_gain; + int tia_gain; + u32 received_power, rx_pwr_threshold; u16 old_sslpnCalibClkEnCtrl, old_sslpnRxFeClkEnCtrl; u16 values_to_save[11]; s16 *ptr; @@ -1408,134 +1368,126 @@ wlc_lcnphy_rx_iq_cal(struct brcms_phy *pi, goto cal_done; } - WARN_ON(module != 1); - tx_pwr_ctrl = wlc_lcnphy_get_tx_pwr_ctrl(pi); - wlc_lcnphy_set_tx_pwr_ctrl(pi, LCNPHY_TX_PWR_CTRL_OFF); - - for (i = 0; i < 11; i++) - values_to_save[i] = - read_radio_reg(pi, rxiq_cal_rf_reg[i]); - Core1TxControl_old = read_phy_reg(pi, 0x631); - - or_phy_reg(pi, 0x631, 0x0015); - - RFOverride0_old = read_phy_reg(pi, 0x44c); - RFOverrideVal0_old = read_phy_reg(pi, 0x44d); - rfoverride2_old = read_phy_reg(pi, 0x4b0); - rfoverride2val_old = read_phy_reg(pi, 0x4b1); - rfoverride3_old = read_phy_reg(pi, 0x4f9); - rfoverride3val_old = read_phy_reg(pi, 0x4fa); - rfoverride4_old = read_phy_reg(pi, 0x938); - rfoverride4val_old = read_phy_reg(pi, 0x939); - afectrlovr_old = read_phy_reg(pi, 0x43b); - afectrlovrval_old = read_phy_reg(pi, 0x43c); - old_sslpnCalibClkEnCtrl = read_phy_reg(pi, 0x6da); - old_sslpnRxFeClkEnCtrl = read_phy_reg(pi, 0x6db); - - tx_gain_override_old = wlc_lcnphy_tx_gain_override_enabled(pi); - if (tx_gain_override_old) { - wlc_lcnphy_get_tx_gain(pi, &old_gains); - tx_gain_index_old = pi_lcn->lcnphy_current_index; - } - - wlc_lcnphy_set_tx_pwr_by_index(pi, tx_gain_idx); + if (module == 1) { - mod_phy_reg(pi, 0x4f9, (0x1 << 0), 1 << 0); - mod_phy_reg(pi, 0x4fa, (0x1 << 0), 0 << 0); + tx_pwr_ctrl = wlc_lcnphy_get_tx_pwr_ctrl(pi); + wlc_lcnphy_set_tx_pwr_ctrl(pi, LCNPHY_TX_PWR_CTRL_OFF); - mod_phy_reg(pi, 0x43b, (0x1 << 1), 1 << 1); - mod_phy_reg(pi, 0x43c, (0x1 << 1), 0 << 1); + for (i = 0; i < 11; i++) + values_to_save[i] = + read_radio_reg(pi, rxiq_cal_rf_reg[i]); + Core1TxControl_old = read_phy_reg(pi, 0x631); + + or_phy_reg(pi, 0x631, 0x0015); + + RFOverride0_old = read_phy_reg(pi, 0x44c); + RFOverrideVal0_old = read_phy_reg(pi, 0x44d); + rfoverride2_old = read_phy_reg(pi, 0x4b0); + rfoverride2val_old = read_phy_reg(pi, 0x4b1); + rfoverride3_old = read_phy_reg(pi, 0x4f9); + rfoverride3val_old = read_phy_reg(pi, 0x4fa); + rfoverride4_old = read_phy_reg(pi, 0x938); + rfoverride4val_old = read_phy_reg(pi, 0x939); + afectrlovr_old = read_phy_reg(pi, 0x43b); + afectrlovrval_old = read_phy_reg(pi, 0x43c); + old_sslpnCalibClkEnCtrl = read_phy_reg(pi, 0x6da); + old_sslpnRxFeClkEnCtrl = read_phy_reg(pi, 0x6db); + + tx_gain_override_old = wlc_lcnphy_tx_gain_override_enabled(pi); + if (tx_gain_override_old) { + wlc_lcnphy_get_tx_gain(pi, &old_gains); + tx_gain_index_old = pi_lcn->lcnphy_current_index; + } - write_radio_reg(pi, RADIO_2064_REG116, 0x06); - write_radio_reg(pi, RADIO_2064_REG12C, 0x07); - write_radio_reg(pi, RADIO_2064_REG06A, 0xd3); - write_radio_reg(pi, RADIO_2064_REG098, 0x03); - write_radio_reg(pi, RADIO_2064_REG00B, 0x7); - mod_radio_reg(pi, RADIO_2064_REG113, 1 << 4, 1 << 4); - write_radio_reg(pi, RADIO_2064_REG01D, 0x01); - write_radio_reg(pi, RADIO_2064_REG114, 0x01); - write_radio_reg(pi, RADIO_2064_REG02E, 0x10); - write_radio_reg(pi, RADIO_2064_REG12A, 0x08); - - mod_phy_reg(pi, 0x938, (0x1 << 0), 1 << 0); - mod_phy_reg(pi, 0x939, (0x1 << 0), 0 << 0); - mod_phy_reg(pi, 0x938, (0x1 << 1), 1 << 1); - mod_phy_reg(pi, 0x939, (0x1 << 1), 1 << 1); - mod_phy_reg(pi, 0x938, (0x1 << 2), 1 << 2); - mod_phy_reg(pi, 0x939, (0x1 << 2), 1 << 2); - mod_phy_reg(pi, 0x938, (0x1 << 3), 1 << 3); - mod_phy_reg(pi, 0x939, (0x1 << 3), 1 << 3); - mod_phy_reg(pi, 0x938, (0x1 << 5), 1 << 5); - mod_phy_reg(pi, 0x939, (0x1 << 5), 0 << 5); + wlc_lcnphy_set_tx_pwr_by_index(pi, tx_gain_idx); - mod_phy_reg(pi, 0x43b, (0x1 << 0), 1 << 0); - mod_phy_reg(pi, 0x43c, (0x1 << 0), 0 << 0); + mod_phy_reg(pi, 0x4f9, (0x1 << 0), 1 << 0); + mod_phy_reg(pi, 0x4fa, (0x1 << 0), 0 << 0); - write_phy_reg(pi, 0x6da, 0xffff); - or_phy_reg(pi, 0x6db, 0x3); + mod_phy_reg(pi, 0x43b, (0x1 << 1), 1 << 1); + mod_phy_reg(pi, 0x43c, (0x1 << 1), 0 << 1); - wlc_lcnphy_set_trsw_override(pi, tx_switch, rx_switch); - set_gain = false; - - lna2_gain = 3; - while ((lna2_gain >= 0) && !set_gain) { - tia_gain = 4; - - while ((tia_gain >= 0) && !set_gain) { - biq1_gain = 6; - - while ((biq1_gain >= 0) && !set_gain) { - set_gain = wlc_lcnphy_rx_iq_cal_gain(pi, - (u16) - biq1_gain, - (u16) - tia_gain, - (u16) - lna2_gain); - biq1_gain -= 1; - } + write_radio_reg(pi, RADIO_2064_REG116, 0x06); + write_radio_reg(pi, RADIO_2064_REG12C, 0x07); + write_radio_reg(pi, RADIO_2064_REG06A, 0xd3); + write_radio_reg(pi, RADIO_2064_REG098, 0x03); + write_radio_reg(pi, RADIO_2064_REG00B, 0x7); + mod_radio_reg(pi, RADIO_2064_REG113, 1 << 4, 1 << 4); + write_radio_reg(pi, RADIO_2064_REG01D, 0x01); + write_radio_reg(pi, RADIO_2064_REG114, 0x01); + write_radio_reg(pi, RADIO_2064_REG02E, 0x10); + write_radio_reg(pi, RADIO_2064_REG12A, 0x08); + + mod_phy_reg(pi, 0x938, (0x1 << 0), 1 << 0); + mod_phy_reg(pi, 0x939, (0x1 << 0), 0 << 0); + mod_phy_reg(pi, 0x938, (0x1 << 1), 1 << 1); + mod_phy_reg(pi, 0x939, (0x1 << 1), 1 << 1); + mod_phy_reg(pi, 0x938, (0x1 << 2), 1 << 2); + mod_phy_reg(pi, 0x939, (0x1 << 2), 1 << 2); + mod_phy_reg(pi, 0x938, (0x1 << 3), 1 << 3); + mod_phy_reg(pi, 0x939, (0x1 << 3), 1 << 3); + mod_phy_reg(pi, 0x938, (0x1 << 5), 1 << 5); + mod_phy_reg(pi, 0x939, (0x1 << 5), 0 << 5); + + mod_phy_reg(pi, 0x43b, (0x1 << 0), 1 << 0); + mod_phy_reg(pi, 0x43c, (0x1 << 0), 0 << 0); + + wlc_lcnphy_start_tx_tone(pi, 2000, 120, 0); + write_phy_reg(pi, 0x6da, 0xffff); + or_phy_reg(pi, 0x6db, 0x3); + wlc_lcnphy_set_trsw_override(pi, tx_switch, rx_switch); + wlc_lcnphy_rx_gain_override_enable(pi, true); + + tia_gain = 8; + rx_pwr_threshold = 950; + while (tia_gain > 0) { tia_gain -= 1; + wlc_lcnphy_set_rx_gain_by_distribution(pi, + 0, 0, 2, 2, + (u16) + tia_gain, 1, 0); + udelay(500); + + received_power = + wlc_lcnphy_measure_digital_power(pi, 2000); + if (received_power < rx_pwr_threshold) + break; } - lna2_gain -= 1; - } + result = wlc_lcnphy_calc_rx_iq_comp(pi, 0xffff); - if (set_gain) - result = wlc_lcnphy_calc_rx_iq_comp(pi, 1024); - else - result = false; + wlc_lcnphy_stop_tx_tone(pi); - wlc_lcnphy_stop_tx_tone(pi); + write_phy_reg(pi, 0x631, Core1TxControl_old); - write_phy_reg(pi, 0x631, Core1TxControl_old); - - write_phy_reg(pi, 0x44c, RFOverrideVal0_old); - write_phy_reg(pi, 0x44d, RFOverrideVal0_old); - write_phy_reg(pi, 0x4b0, rfoverride2_old); - write_phy_reg(pi, 0x4b1, rfoverride2val_old); - write_phy_reg(pi, 0x4f9, rfoverride3_old); - write_phy_reg(pi, 0x4fa, rfoverride3val_old); - write_phy_reg(pi, 0x938, rfoverride4_old); - write_phy_reg(pi, 0x939, rfoverride4val_old); - write_phy_reg(pi, 0x43b, afectrlovr_old); - write_phy_reg(pi, 0x43c, afectrlovrval_old); - write_phy_reg(pi, 0x6da, old_sslpnCalibClkEnCtrl); - write_phy_reg(pi, 0x6db, old_sslpnRxFeClkEnCtrl); + write_phy_reg(pi, 0x44c, RFOverrideVal0_old); + write_phy_reg(pi, 0x44d, RFOverrideVal0_old); + write_phy_reg(pi, 0x4b0, rfoverride2_old); + write_phy_reg(pi, 0x4b1, rfoverride2val_old); + write_phy_reg(pi, 0x4f9, rfoverride3_old); + write_phy_reg(pi, 0x4fa, rfoverride3val_old); + write_phy_reg(pi, 0x938, rfoverride4_old); + write_phy_reg(pi, 0x939, rfoverride4val_old); + write_phy_reg(pi, 0x43b, afectrlovr_old); + write_phy_reg(pi, 0x43c, afectrlovrval_old); + write_phy_reg(pi, 0x6da, old_sslpnCalibClkEnCtrl); + write_phy_reg(pi, 0x6db, old_sslpnRxFeClkEnCtrl); - wlc_lcnphy_clear_trsw_override(pi); + wlc_lcnphy_clear_trsw_override(pi); - mod_phy_reg(pi, 0x44c, (0x1 << 2), 0 << 2); + mod_phy_reg(pi, 0x44c, (0x1 << 2), 0 << 2); - for (i = 0; i < 11; i++) - write_radio_reg(pi, rxiq_cal_rf_reg[i], - values_to_save[i]); + for (i = 0; i < 11; i++) + write_radio_reg(pi, rxiq_cal_rf_reg[i], + values_to_save[i]); - if (tx_gain_override_old) - wlc_lcnphy_set_tx_pwr_by_index(pi, tx_gain_index_old); - else - wlc_lcnphy_disable_tx_gain_override(pi); + if (tx_gain_override_old) + wlc_lcnphy_set_tx_pwr_by_index(pi, tx_gain_index_old); + else + wlc_lcnphy_disable_tx_gain_override(pi); - wlc_lcnphy_set_tx_pwr_ctrl(pi, tx_pwr_ctrl); - wlc_lcnphy_rx_gain_override_enable(pi, false); + wlc_lcnphy_set_tx_pwr_ctrl(pi, tx_pwr_ctrl); + wlc_lcnphy_rx_gain_override_enable(pi, false); + } cal_done: kfree(ptr); @@ -1829,17 +1781,6 @@ wlc_lcnphy_radio_2064_channel_tune_4313(struct brcms_phy *pi, u8 channel) write_radio_reg(pi, RADIO_2064_REG038, 3); write_radio_reg(pi, RADIO_2064_REG091, 7); } - - if (!(pi->sh->boardflags & BFL_FEM)) { - u8 reg038[14] = {0xd, 0xe, 0xd, 0xd, 0xd, 0xc, - 0xa, 0xb, 0xb, 0x3, 0x3, 0x2, 0x0, 0x0}; - - write_radio_reg(pi, RADIO_2064_REG02A, 0xf); - write_radio_reg(pi, RADIO_2064_REG091, 0x3); - write_radio_reg(pi, RADIO_2064_REG038, 0x3); - - write_radio_reg(pi, RADIO_2064_REG038, reg038[channel - 1]); - } } static int @@ -2034,16 +1975,6 @@ wlc_lcnphy_set_tssi_mux(struct brcms_phy *pi, enum lcnphy_tssi_mode pos) } else { mod_radio_reg(pi, RADIO_2064_REG03A, 1, 0x1); mod_radio_reg(pi, RADIO_2064_REG11A, 0x8, 0x8); - mod_radio_reg(pi, RADIO_2064_REG028, 0x1, 0x0); - mod_radio_reg(pi, RADIO_2064_REG11A, 0x4, 1<<2); - mod_radio_reg(pi, RADIO_2064_REG036, 0x10, 0x0); - mod_radio_reg(pi, RADIO_2064_REG11A, 0x10, 1<<4); - mod_radio_reg(pi, RADIO_2064_REG036, 0x3, 0x0); - mod_radio_reg(pi, RADIO_2064_REG035, 0xff, 0x77); - mod_radio_reg(pi, RADIO_2064_REG028, 0x1e, 0xe<<1); - mod_radio_reg(pi, RADIO_2064_REG112, 0x80, 1<<7); - mod_radio_reg(pi, RADIO_2064_REG005, 0x7, 1<<1); - mod_radio_reg(pi, RADIO_2064_REG029, 0xf0, 0<<4); } } else { mod_phy_reg(pi, 0x4d9, (0x1 << 2), (0x1) << 2); @@ -2130,14 +2061,12 @@ static void wlc_lcnphy_pwrctrl_rssiparams(struct brcms_phy *pi) (auxpga_vmid_temp << 0) | (auxpga_gain_temp << 12)); mod_radio_reg(pi, RADIO_2064_REG082, (1 << 5), (1 << 5)); - mod_radio_reg(pi, RADIO_2064_REG07C, (1 << 0), (1 << 0)); } static void wlc_lcnphy_tssi_setup(struct brcms_phy *pi) { struct phytbl_info tab; u32 rfseq, ind; - u8 tssi_sel; tab.tbl_id = LCNPHY_TBL_ID_TXPWRCTL; tab.tbl_width = 32; @@ -2159,13 +2088,7 @@ static void wlc_lcnphy_tssi_setup(struct brcms_phy *pi) mod_phy_reg(pi, 0x503, (0x1 << 4), (1) << 4); - if (pi->sh->boardflags & BFL_FEM) { - tssi_sel = 0x1; - wlc_lcnphy_set_tssi_mux(pi, LCNPHY_TSSI_EXT); - } else { - tssi_sel = 0xe; - wlc_lcnphy_set_tssi_mux(pi, LCNPHY_TSSI_POST_PA); - } + wlc_lcnphy_set_tssi_mux(pi, LCNPHY_TSSI_EXT); mod_phy_reg(pi, 0x4a4, (0x1 << 14), (0) << 14); mod_phy_reg(pi, 0x4a4, (0x1 << 15), (1) << 15); @@ -2201,10 +2124,9 @@ static void wlc_lcnphy_tssi_setup(struct brcms_phy *pi) mod_phy_reg(pi, 0x49a, (0x1ff << 0), (0xff) << 0); if (LCNREV_IS(pi->pubpi.phy_rev, 2)) { - mod_radio_reg(pi, RADIO_2064_REG028, 0xf, tssi_sel); + mod_radio_reg(pi, RADIO_2064_REG028, 0xf, 0xe); mod_radio_reg(pi, RADIO_2064_REG086, 0x4, 0x4); } else { - mod_radio_reg(pi, RADIO_2064_REG028, 0x1e, tssi_sel << 1); mod_radio_reg(pi, RADIO_2064_REG03A, 0x1, 1); mod_radio_reg(pi, RADIO_2064_REG11A, 0x8, 1 << 3); } @@ -2251,10 +2173,6 @@ static void wlc_lcnphy_tssi_setup(struct brcms_phy *pi) mod_phy_reg(pi, 0x4d7, (0xf << 8), (0) << 8); - mod_radio_reg(pi, RADIO_2064_REG035, 0xff, 0x0); - mod_radio_reg(pi, RADIO_2064_REG036, 0x3, 0x0); - mod_radio_reg(pi, RADIO_2064_REG11A, 0x8, 0x8); - wlc_lcnphy_pwrctrl_rssiparams(pi); } @@ -2873,8 +2791,6 @@ static void wlc_lcnphy_idle_tssi_est(struct brcms_phy_pub *ppi) read_radio_reg(pi, RADIO_2064_REG007) & 1; u16 SAVE_jtag_auxpga = read_radio_reg(pi, RADIO_2064_REG0FF) & 0x10; u16 SAVE_iqadc_aux_en = read_radio_reg(pi, RADIO_2064_REG11F) & 4; - u8 SAVE_bbmult = wlc_lcnphy_get_bbmult(pi); - idleTssi = read_phy_reg(pi, 0x4ab); suspend = (0 == (bcma_read32(pi->d11core, D11REGOFFS(maccontrol)) & MCTL_EN_MAC)); @@ -2892,12 +2808,6 @@ static void wlc_lcnphy_idle_tssi_est(struct brcms_phy_pub *ppi) mod_radio_reg(pi, RADIO_2064_REG0FF, 0x10, 1 << 4); mod_radio_reg(pi, RADIO_2064_REG11F, 0x4, 1 << 2); wlc_lcnphy_tssi_setup(pi); - - mod_phy_reg(pi, 0x4d7, (0x1 << 0), (1 << 0)); - mod_phy_reg(pi, 0x4d7, (0x1 << 6), (1 << 6)); - - wlc_lcnphy_set_bbmult(pi, 0x0); - wlc_phy_do_dummy_tx(pi, true, OFF); idleTssi = ((read_phy_reg(pi, 0x4ab) & (0x1ff << 0)) >> 0); @@ -2919,7 +2829,6 @@ static void wlc_lcnphy_idle_tssi_est(struct brcms_phy_pub *ppi) mod_phy_reg(pi, 0x44c, (0x1 << 12), (0) << 12); - wlc_lcnphy_set_bbmult(pi, SAVE_bbmult); wlc_lcnphy_set_tx_gain_override(pi, tx_gain_override_old); wlc_lcnphy_set_tx_gain(pi, &old_gains); wlc_lcnphy_set_tx_pwr_ctrl(pi, SAVE_txpwrctrl); @@ -3133,11 +3042,6 @@ static void wlc_lcnphy_tx_pwr_ctrl_init(struct brcms_phy_pub *ppi) wlc_lcnphy_write_table(pi, &tab); tab.tbl_offset++; } - mod_phy_reg(pi, 0x4d0, (0x1 << 0), (0) << 0); - mod_phy_reg(pi, 0x4d3, (0xff << 0), (0) << 0); - mod_phy_reg(pi, 0x4d3, (0xff << 8), (0) << 8); - mod_phy_reg(pi, 0x4d0, (0x1 << 4), (0) << 4); - mod_phy_reg(pi, 0x4d0, (0x1 << 2), (0) << 2); mod_phy_reg(pi, 0x410, (0x1 << 7), (0) << 7); @@ -3939,6 +3843,7 @@ static void wlc_lcnphy_txpwrtbl_iqlo_cal(struct brcms_phy *pi) target_gains.pad_gain = 21; target_gains.dac_gain = 0; wlc_lcnphy_set_tx_gain(pi, &target_gains); + wlc_lcnphy_set_tx_pwr_by_index(pi, 16); if (LCNREV_IS(pi->pubpi.phy_rev, 1) || pi_lcn->lcnphy_hw_iqcal_en) { @@ -3949,7 +3854,6 @@ static void wlc_lcnphy_txpwrtbl_iqlo_cal(struct brcms_phy *pi) lcnphy_recal ? LCNPHY_CAL_RECAL : LCNPHY_CAL_FULL), false); } else { - wlc_lcnphy_set_tx_pwr_by_index(pi, 16); wlc_lcnphy_tx_iqlo_soft_cal_full(pi); } @@ -4374,22 +4278,17 @@ wlc_lcnphy_load_tx_gain_table(struct brcms_phy *pi, if (CHSPEC_IS5G(pi->radio_chanspec)) pa_gain = 0x70; else - pa_gain = 0x60; + pa_gain = 0x70; if (pi->sh->boardflags & BFL_FEM) pa_gain = 0x10; - tab.tbl_id = LCNPHY_TBL_ID_TXPWRCTL; tab.tbl_width = 32; tab.tbl_len = 1; tab.tbl_ptr = &val; for (j = 0; j < 128; j++) { - if (pi->sh->boardflags & BFL_FEM) - gm_gain = gain_table[j].gm; - else - gm_gain = 15; - + gm_gain = gain_table[j].gm; val = (((u32) pa_gain << 24) | (gain_table[j].pad << 16) | (gain_table[j].pga << 8) | gm_gain); @@ -4600,10 +4499,7 @@ static void wlc_radio_2064_init(struct brcms_phy *pi) write_phy_reg(pi, 0x4ea, 0x4688); - if (pi->sh->boardflags & BFL_FEM) - mod_phy_reg(pi, 0x4eb, (0x7 << 0), 2 << 0); - else - mod_phy_reg(pi, 0x4eb, (0x7 << 0), 3 << 0); + mod_phy_reg(pi, 0x4eb, (0x7 << 0), 2 << 0); mod_phy_reg(pi, 0x4eb, (0x7 << 6), 0 << 6); @@ -4614,13 +4510,6 @@ static void wlc_radio_2064_init(struct brcms_phy *pi) wlc_lcnphy_rcal(pi); wlc_lcnphy_rc_cal(pi); - - if (!(pi->sh->boardflags & BFL_FEM)) { - write_radio_reg(pi, RADIO_2064_REG032, 0x6f); - write_radio_reg(pi, RADIO_2064_REG033, 0x19); - write_radio_reg(pi, RADIO_2064_REG039, 0xe); - } - } static void wlc_lcnphy_radio_init(struct brcms_phy *pi) @@ -4650,20 +4539,22 @@ static void wlc_lcnphy_tbl_init(struct brcms_phy *pi) wlc_lcnphy_write_table(pi, &tab); } - if (!(pi->sh->boardflags & BFL_FEM)) { - tab.tbl_id = LCNPHY_TBL_ID_RFSEQ; - tab.tbl_width = 16; - tab.tbl_ptr = &val; - tab.tbl_len = 1; + tab.tbl_id = LCNPHY_TBL_ID_RFSEQ; + tab.tbl_width = 16; + tab.tbl_ptr = &val; + tab.tbl_len = 1; - val = 150; - tab.tbl_offset = 0; - wlc_lcnphy_write_table(pi, &tab); + val = 114; + tab.tbl_offset = 0; + wlc_lcnphy_write_table(pi, &tab); - val = 220; - tab.tbl_offset = 1; - wlc_lcnphy_write_table(pi, &tab); - } + val = 130; + tab.tbl_offset = 1; + wlc_lcnphy_write_table(pi, &tab); + + val = 6; + tab.tbl_offset = 8; + wlc_lcnphy_write_table(pi, &tab); if (CHSPEC_IS2G(pi->radio_chanspec)) { if (pi->sh->boardflags & BFL_FEM) @@ -5055,7 +4946,6 @@ void wlc_phy_chanspec_set_lcnphy(struct brcms_phy *pi, u16 chanspec) wlc_lcnphy_load_tx_iir_filter(pi, true, 3); mod_phy_reg(pi, 0x4eb, (0x7 << 3), (1) << 3); - wlc_lcnphy_tssi_setup(pi); } void wlc_phy_detach_lcnphy(struct brcms_phy *pi) @@ -5094,7 +4984,8 @@ bool wlc_phy_attach_lcnphy(struct brcms_phy *pi) if (!wlc_phy_txpwr_srom_read_lcnphy(pi)) return false; - if (LCNREV_IS(pi->pubpi.phy_rev, 1)) { + if ((pi->sh->boardflags & BFL_FEM) && + (LCNREV_IS(pi->pubpi.phy_rev, 1))) { if (pi_lcn->lcnphy_tempsense_option == 3) { pi->hwpwrctrl = true; pi->hwpwrctrl_capable = true; diff --git a/drivers/net/wireless/brcm80211/brcmsmac/phy/phytbl_lcn.c b/drivers/net/wireless/brcm80211/brcmsmac/phy/phytbl_lcn.c index b7e95acc2084..622c01ca72c5 100644 --- a/drivers/net/wireless/brcm80211/brcmsmac/phy/phytbl_lcn.c +++ b/drivers/net/wireless/brcm80211/brcmsmac/phy/phytbl_lcn.c @@ -1992,70 +1992,70 @@ static const u16 dot11lcn_sw_ctrl_tbl_4313_epa_rev0[] = { }; static const u16 dot11lcn_sw_ctrl_tbl_4313_rev0[] = { - 0x0009, 0x000a, - 0x0005, - 0x0006, 0x0009, - 0x000a, - 0x0005, 0x0006, - 0x0009, - 0x000a, 0x0005, - 0x0006, - 0x0009, 0x000a, - 0x0005, - 0x0006, 0x0009, - 0x000a, - 0x0005, 0x0006, - 0x0009, - 0x000a, 0x0005, - 0x0006, - 0x0009, 0x000a, - 0x0005, - 0x0006, 0x0009, - 0x000a, - 0x0005, 0x0006, - 0x0009, - 0x000a, 0x0005, - 0x0006, - 0x0009, 0x000a, - 0x0005, - 0x0006, 0x0009, - 0x000a, - 0x0005, 0x0006, - 0x0009, - 0x000a, 0x0005, - 0x0006, + 0x000a, 0x0009, + 0x0006, + 0x0005, 0x000a, + 0x0009, + 0x0006, 0x0005, + 0x000a, + 0x0009, 0x0006, + 0x0005, + 0x000a, 0x0009, + 0x0006, + 0x0005, 0x000a, + 0x0009, + 0x0006, 0x0005, + 0x000a, + 0x0009, 0x0006, + 0x0005, + 0x000a, 0x0009, + 0x0006, + 0x0005, 0x000a, + 0x0009, + 0x0006, 0x0005, + 0x000a, + 0x0009, 0x0006, + 0x0005, + 0x000a, 0x0009, + 0x0006, + 0x0005, 0x000a, + 0x0009, + 0x0006, 0x0005, + 0x000a, + 0x0009, 0x0006, + 0x0005, }; static const u16 dot11lcn_sw_ctrl_tbl_rev0[] = { -- cgit v1.2.1 From e67dd874e60529dbd2e8232babb1e23479ba2ffa Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Tue, 19 Mar 2013 07:52:48 +0100 Subject: b43: N-PHY: increase initial value of "mind" in RSSI calibration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We're using "mind" variable to find the VCM that got the best polling results. For each VCM we calculte "currd" which is compared to the "mind". For PHY rev3+ "currd" gets values around 14k-40k. Looking for a value smaller than 40 makes no sense, so increase the initial value. This fixes a regression introduced in 3.4 by commit: e0c9a0219a8f542e3946fe972a68aacf8c3f906c (my BCM4322 performance dropped from 18,4Mb/s to 9,26Mb/s) Signed-off-by: Rafał Miłecki Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_n.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index 3c35382ee6c2..e014a7a8154d 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -1615,7 +1615,7 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) } for (i = 0; i < 4; i += 2) { s32 curr; - s32 mind = 40; + s32 mind = 0x100000; s32 minpoll = 249; u8 minvcm = 0; if (2 * core != i) @@ -1799,7 +1799,7 @@ static void b43_nphy_rev2_rssi_cal(struct b43_wldev *dev, u8 type) } for (i = 0; i < 4; i++) { - s32 mind = 40; + s32 mind = 0x100000; u8 minvcm = 0; s32 minpoll = 249; s32 curr; -- cgit v1.2.1 From b251412db99ccd4495ce372fec7daee27bf06923 Mon Sep 17 00:00:00 2001 From: "Iestyn C. Elfick" Date: Wed, 20 Mar 2013 14:02:31 -0500 Subject: b43: A fix for DMA transmission sequence errors Intermittently, b43 will report "Out of order TX status report on DMA ring". When this happens, the driver must be reset before communication can resume. The cause of the problem is believed to be an error in the closed-source firmware; however, all versions of the firmware are affected. This change uses the observation that the expected status is always 2 less than the observed value, and supplies a fake status report to skip one header/data pair. Not all devices suffer from this problem, but it can occur several times per second under heavy load. As each occurence kills the unmodified driver, this patch makes if possible for the affected devices to function. The patch logs only the first instance of the reset operation to prevent spamming the logs. Tested-by: Chris Vine Signed-off-by: Larry Finger Cc: Stable Signed-off-by: John W. Linville --- drivers/net/wireless/b43/dma.c | 65 ++++++++++++++++++++++++++++++++++-------- 1 file changed, 53 insertions(+), 12 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/b43/dma.c b/drivers/net/wireless/b43/dma.c index 38bc5a7997ff..122146943bf2 100644 --- a/drivers/net/wireless/b43/dma.c +++ b/drivers/net/wireless/b43/dma.c @@ -1487,8 +1487,12 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, const struct b43_dma_ops *ops; struct b43_dmaring *ring; struct b43_dmadesc_meta *meta; + static const struct b43_txstatus fake; /* filled with 0 */ + const struct b43_txstatus *txstat; int slot, firstused; bool frame_succeed; + int skip; + static u8 err_out1, err_out2; ring = parse_cookie(dev, status->cookie, &slot); if (unlikely(!ring)) @@ -1501,13 +1505,36 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, firstused = ring->current_slot - ring->used_slots + 1; if (firstused < 0) firstused = ring->nr_slots + firstused; + + skip = 0; if (unlikely(slot != firstused)) { /* This possibly is a firmware bug and will result in - * malfunction, memory leaks and/or stall of DMA functionality. */ - b43dbg(dev->wl, "Out of order TX status report on DMA ring %d. " - "Expected %d, but got %d\n", - ring->index, firstused, slot); - return; + * malfunction, memory leaks and/or stall of DMA functionality. + */ + if (slot == next_slot(ring, next_slot(ring, firstused))) { + /* If a single header/data pair was missed, skip over + * the first two slots in an attempt to recover. + */ + slot = firstused; + skip = 2; + if (!err_out1) { + /* Report the error once. */ + b43dbg(dev->wl, + "Skip on DMA ring %d slot %d.\n", + ring->index, slot); + err_out1 = 1; + } + } else { + /* More than a single header/data pair were missed. + * Report this error once. + */ + if (!err_out2) + b43dbg(dev->wl, + "Out of order TX status report on DMA ring %d. Expected %d, but got %d\n", + ring->index, firstused, slot); + err_out2 = 1; + return; + } } ops = ring->ops; @@ -1522,11 +1549,13 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, slot, firstused, ring->index); break; } + if (meta->skb) { struct b43_private_tx_info *priv_info = - b43_get_priv_tx_info(IEEE80211_SKB_CB(meta->skb)); + b43_get_priv_tx_info(IEEE80211_SKB_CB(meta->skb)); - unmap_descbuffer(ring, meta->dmaaddr, meta->skb->len, 1); + unmap_descbuffer(ring, meta->dmaaddr, + meta->skb->len, 1); kfree(priv_info->bouncebuffer); priv_info->bouncebuffer = NULL; } else { @@ -1538,8 +1567,9 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, struct ieee80211_tx_info *info; if (unlikely(!meta->skb)) { - /* This is a scatter-gather fragment of a frame, so - * the skb pointer must not be NULL. */ + /* This is a scatter-gather fragment of a frame, + * so the skb pointer must not be NULL. + */ b43dbg(dev->wl, "TX status unexpected NULL skb " "at slot %d (first=%d) on ring %d\n", slot, firstused, ring->index); @@ -1550,9 +1580,18 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, /* * Call back to inform the ieee80211 subsystem about - * the status of the transmission. + * the status of the transmission. When skipping over + * a missed TX status report, use a status structure + * filled with zeros to indicate that the frame was not + * sent (frame_count 0) and not acknowledged */ - frame_succeed = b43_fill_txstatus_report(dev, info, status); + if (unlikely(skip)) + txstat = &fake; + else + txstat = status; + + frame_succeed = b43_fill_txstatus_report(dev, info, + txstat); #ifdef CONFIG_B43_DEBUG if (frame_succeed) ring->nr_succeed_tx_packets++; @@ -1580,12 +1619,14 @@ void b43_dma_handle_txstatus(struct b43_wldev *dev, /* Everything unmapped and free'd. So it's not used anymore. */ ring->used_slots--; - if (meta->is_last_fragment) { + if (meta->is_last_fragment && !skip) { /* This is the last scatter-gather * fragment of the frame. We are done. */ break; } slot = next_slot(ring, slot); + if (skip > 0) + --skip; } if (ring->stopped) { B43_WARN_ON(free_slots(ring) < TX_SLOTS_PER_FRAME); -- cgit v1.2.1 From 7fc0357479eeff4ca808c4d8c09bc7631f576b8d Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 25 Mar 2013 11:27:46 -0700 Subject: ath9k: avoid queueing hw check work when suspended The following issue was reported. WARNING: at net/mac80211/util.c:599 ieee80211_can_queue_work.isra.7+0x32/0x40 [mac80211]() Hardware name: iMac12,1 queueing ieee80211 work while going to suspend Pid: 0, comm: swapper/0 Tainted: PF O 3.8.2-206.fc18.x86_64 #1 Call Trace: Mar 16 09:39:17 Parags-iMac kernel: [ 3993.642992] [] warn_slowpath_common+0x7f/0xc0 [] ? ath_start_rx_poll+0x70/0x70 [ath9k] ] warn_slowpath_fmt+0x46/0x50 [] ieee80211_can_queue_work.isra.7+0x32/0x40 Fix this by avoiding to queue the work if our device has already been marked as suspended or stopped. Reported-by: Parag Warudkar Tested-by: Parag Warudkar Cc: stable@vger.kernel.org Signed-off-by: Luis R. Rodriguez Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/link.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/ath/ath9k/link.c b/drivers/net/wireless/ath/ath9k/link.c index 39c84ecf6a42..7fdac6c7b3ea 100644 --- a/drivers/net/wireless/ath/ath9k/link.c +++ b/drivers/net/wireless/ath/ath9k/link.c @@ -170,7 +170,8 @@ void ath_rx_poll(unsigned long data) { struct ath_softc *sc = (struct ath_softc *)data; - ieee80211_queue_work(sc->hw, &sc->hw_check_work); + if (!test_bit(SC_OP_INVALID, &sc->sc_flags)) + ieee80211_queue_work(sc->hw, &sc->hw_check_work); } /* -- cgit v1.2.1 From ace5af39866da7d45f43774150dace19a73716d6 Mon Sep 17 00:00:00 2001 From: Colin Ian King Date: Tue, 26 Mar 2013 17:35:23 +0000 Subject: iwlegacy: 4965-rs: avoid null pointer dereference error il4965_rs_initialize_lq checks to see if sta is null, however, before that check il4965_rs_use_green dereferences sta when intializing use_green. Avoid a potential null pointer dereference error by only calling il4965_rs_use_green after we are sure sta is not null. Smatch analysis: drivers/net/wireless/iwlegacy/4965-rs.c:2160 il4965_rs_initialize_lq() warn: variable dereferenced before check 'sta' (see line 2155) Signed-off-by: Colin Ian King Signed-off-by: John W. Linville --- drivers/net/wireless/iwlegacy/4965-rs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlegacy/4965-rs.c b/drivers/net/wireless/iwlegacy/4965-rs.c index e8324b5e5bfe..6c7493c2d698 100644 --- a/drivers/net/wireless/iwlegacy/4965-rs.c +++ b/drivers/net/wireless/iwlegacy/4965-rs.c @@ -2152,7 +2152,7 @@ il4965_rs_initialize_lq(struct il_priv *il, struct ieee80211_conf *conf, int rate_idx; int i; u32 rate; - u8 use_green = il4965_rs_use_green(il, sta); + u8 use_green; u8 active_tbl = 0; u8 valid_tx_ant; struct il_station_priv *sta_priv; @@ -2160,6 +2160,7 @@ il4965_rs_initialize_lq(struct il_priv *il, struct ieee80211_conf *conf, if (!sta || !lq_sta) return; + use_green = il4965_rs_use_green(il, sta); sta_priv = (void *)sta->drv_priv; i = lq_sta->last_txrate_idx; -- cgit v1.2.1 From 2e1253d640eb7f8707d2591c93097c1e9f9c71d5 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Wed, 27 Mar 2013 08:37:08 +0100 Subject: b43: N-PHY: use more bits for offset in RSSI calibration MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When calculating "offset" for final RSSI calibration we're using numbers bigger than s8 can hold. We have for example: offset[j] = 232 - poll_results[j]; formula. If poll_results[j] is small enough (it usually is) we treat number's bit as a sign bit. For example 232 - 1 becomes: 0xE8 - 0x1 = 0xE7, which is not 231 but -25. This code was introduced in e0c9a0219a8f542e3946fe972a68aacf8c3f906c and caused stability regression on some cards, for ex. BCM4322. Signed-off-by: Rafał Miłecki Cc: stable@vger.kernel.org Signed-off-by: John W. Linville --- drivers/net/wireless/b43/phy_n.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/b43/phy_n.c b/drivers/net/wireless/b43/phy_n.c index e014a7a8154d..e8486c1e091a 100644 --- a/drivers/net/wireless/b43/phy_n.c +++ b/drivers/net/wireless/b43/phy_n.c @@ -1564,7 +1564,7 @@ static void b43_nphy_rev3_rssi_cal(struct b43_wldev *dev) u16 clip_off[2] = { 0xFFFF, 0xFFFF }; u8 vcm_final = 0; - s8 offset[4]; + s32 offset[4]; s32 results[8][4] = { }; s32 results_min[4] = { }; s32 poll_results[4] = { }; @@ -1732,7 +1732,7 @@ static void b43_nphy_rev2_rssi_cal(struct b43_wldev *dev, u8 type) u8 regs_save_radio[2]; u16 regs_save_phy[2]; - s8 offset[4]; + s32 offset[4]; u8 core; u8 rail; -- cgit v1.2.1 From 14109a59caf93e6eae726a34bf2f0897508ec8c1 Mon Sep 17 00:00:00 2001 From: Frank Li Date: Tue, 26 Mar 2013 16:12:03 +0000 Subject: enet: fec: fix fail resume from suspend state Without this patch 1. boot with nfs (no_console_suspend) 2. echo mem >/sys/power/state 3. wakeup by wakesource 4. print "eth0: tx queue full" This fix above problem by reinit bd queue at restart function Signed-off-by: Frank Li Signed-off-by: David S. Miller --- drivers/net/ethernet/freescale/fec.c | 82 ++++++++++++++++++++++-------------- 1 file changed, 50 insertions(+), 32 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/freescale/fec.c b/drivers/net/ethernet/freescale/fec.c index 911d0253dbb2..f292c3aa423f 100644 --- a/drivers/net/ethernet/freescale/fec.c +++ b/drivers/net/ethernet/freescale/fec.c @@ -345,6 +345,53 @@ fec_enet_start_xmit(struct sk_buff *skb, struct net_device *ndev) return NETDEV_TX_OK; } +/* Init RX & TX buffer descriptors + */ +static void fec_enet_bd_init(struct net_device *dev) +{ + struct fec_enet_private *fep = netdev_priv(dev); + struct bufdesc *bdp; + unsigned int i; + + /* Initialize the receive buffer descriptors. */ + bdp = fep->rx_bd_base; + for (i = 0; i < RX_RING_SIZE; i++) { + + /* Initialize the BD for every fragment in the page. */ + if (bdp->cbd_bufaddr) + bdp->cbd_sc = BD_ENET_RX_EMPTY; + else + bdp->cbd_sc = 0; + bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); + } + + /* Set the last buffer to wrap */ + bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex); + bdp->cbd_sc |= BD_SC_WRAP; + + fep->cur_rx = fep->rx_bd_base; + + /* ...and the same for transmit */ + bdp = fep->tx_bd_base; + fep->cur_tx = bdp; + for (i = 0; i < TX_RING_SIZE; i++) { + + /* Initialize the BD for every fragment in the page. */ + bdp->cbd_sc = 0; + if (bdp->cbd_bufaddr && fep->tx_skbuff[i]) { + dev_kfree_skb_any(fep->tx_skbuff[i]); + fep->tx_skbuff[i] = NULL; + } + bdp->cbd_bufaddr = 0; + bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); + } + + /* Set the last buffer to wrap */ + bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex); + bdp->cbd_sc |= BD_SC_WRAP; + fep->dirty_tx = bdp; +} + /* This function is called to start or restart the FEC during a link * change. This only happens when switching between half and full * duplex. @@ -388,6 +435,8 @@ fec_restart(struct net_device *ndev, int duplex) /* Set maximum receive buffer size. */ writel(PKT_MAXBLR_SIZE, fep->hwp + FEC_R_BUFF_SIZE); + fec_enet_bd_init(ndev); + /* Set receive and transmit descriptor base. */ writel(fep->bd_dma, fep->hwp + FEC_R_DES_START); if (fep->bufdesc_ex) @@ -397,7 +446,6 @@ fec_restart(struct net_device *ndev, int duplex) writel((unsigned long)fep->bd_dma + sizeof(struct bufdesc) * RX_RING_SIZE, fep->hwp + FEC_X_DES_START); - fep->cur_rx = fep->rx_bd_base; for (i = 0; i <= TX_RING_MOD_MASK; i++) { if (fep->tx_skbuff[i]) { @@ -1597,8 +1645,6 @@ static int fec_enet_init(struct net_device *ndev) { struct fec_enet_private *fep = netdev_priv(ndev); struct bufdesc *cbd_base; - struct bufdesc *bdp; - unsigned int i; /* Allocate memory for buffer descriptors. */ cbd_base = dma_alloc_coherent(NULL, PAGE_SIZE, &fep->bd_dma, @@ -1608,6 +1654,7 @@ static int fec_enet_init(struct net_device *ndev) return -ENOMEM; } + memset(cbd_base, 0, PAGE_SIZE); spin_lock_init(&fep->hw_lock); fep->netdev = ndev; @@ -1631,35 +1678,6 @@ static int fec_enet_init(struct net_device *ndev) writel(FEC_RX_DISABLED_IMASK, fep->hwp + FEC_IMASK); netif_napi_add(ndev, &fep->napi, fec_enet_rx_napi, FEC_NAPI_WEIGHT); - /* Initialize the receive buffer descriptors. */ - bdp = fep->rx_bd_base; - for (i = 0; i < RX_RING_SIZE; i++) { - - /* Initialize the BD for every fragment in the page. */ - bdp->cbd_sc = 0; - bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); - } - - /* Set the last buffer to wrap */ - bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex); - bdp->cbd_sc |= BD_SC_WRAP; - - /* ...and the same for transmit */ - bdp = fep->tx_bd_base; - fep->cur_tx = bdp; - for (i = 0; i < TX_RING_SIZE; i++) { - - /* Initialize the BD for every fragment in the page. */ - bdp->cbd_sc = 0; - bdp->cbd_bufaddr = 0; - bdp = fec_enet_get_nextdesc(bdp, fep->bufdesc_ex); - } - - /* Set the last buffer to wrap */ - bdp = fec_enet_get_prevdesc(bdp, fep->bufdesc_ex); - bdp->cbd_sc |= BD_SC_WRAP; - fep->dirty_tx = bdp; - fec_restart(ndev, 0); return 0; -- cgit v1.2.1 From b56d6b3fca6d1214dbc9c5655f26e5d4ec04afc8 Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Wed, 27 Mar 2013 04:41:59 +0000 Subject: drivers: net: ethernet: cpsw: use netif_wake_queue() while restarting tx queue To restart tx queue use netif_wake_queue() intead of netif_start_queue() so that net schedule will restart transmission immediately which will increase network performance while doing huge data transfers. Reported-by: Dan Franke Suggested-by: Sriramakrishnan A G Signed-off-by: Mugunthan V N Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/cpsw.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index df32a090d08e..80cad06e5eb2 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -436,7 +436,7 @@ void cpsw_tx_handler(void *token, int len, int status) * queue is stopped then start the queue as we have free desc for tx */ if (unlikely(netif_queue_stopped(ndev))) - netif_start_queue(ndev); + netif_wake_queue(ndev); cpts_tx_timestamp(priv->cpts, skb); priv->stats.tx_packets++; priv->stats.tx_bytes += len; -- cgit v1.2.1 From 7e51cde276ca820d526c6c21cf8147df595a36bf Mon Sep 17 00:00:00 2001 From: Mugunthan V N Date: Wed, 27 Mar 2013 04:42:00 +0000 Subject: drivers: net: ethernet: davinci_emac: use netif_wake_queue() while restarting tx queue To restart tx queue use netif_wake_queue() intead of netif_start_queue() so that net schedule will restart transmission immediately which will increase network performance while doing huge data transfers. Reported-by: Dan Franke Suggested-by: Sriramakrishnan A G Signed-off-by: Mugunthan V N Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/ethernet/ti/davinci_emac.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/ti/davinci_emac.c b/drivers/net/ethernet/ti/davinci_emac.c index ae1b77aa199f..72300bc9e378 100644 --- a/drivers/net/ethernet/ti/davinci_emac.c +++ b/drivers/net/ethernet/ti/davinci_emac.c @@ -1053,7 +1053,7 @@ static void emac_tx_handler(void *token, int len, int status) * queue is stopped then start the queue as we have free desc for tx */ if (unlikely(netif_queue_stopped(ndev))) - netif_start_queue(ndev); + netif_wake_queue(ndev); ndev->stats.tx_packets++; ndev->stats.tx_bytes += len; dev_kfree_skb_any(skb); -- cgit v1.2.1 From 715230a44310a8cf66fbfb5a46f9a62a9b2de424 Mon Sep 17 00:00:00 2001 From: Kees Cook Date: Wed, 27 Mar 2013 06:40:50 +0000 Subject: tg3: fix length overflow in VPD firmware parsing Commit 184b89044fb6e2a74611dafa69b1dce0d98612c6 ("tg3: Use VPD fw version when present") introduced VPD parsing that contained a potential length overflow. Limit the hardware's reported firmware string length (max 255 bytes) to stay inside the driver's firmware string length (32 bytes). On overflow, truncate the formatted firmware string instead of potentially overwriting portions of the tg3 struct. http://cansecwest.com/slides/2013/PrivateCore%20CSW%202013.pdf Signed-off-by: Kees Cook Reported-by: Oded Horovitz Reported-by: Brad Spengler Cc: stable@vger.kernel.org Cc: Matt Carlson Signed-off-by: David S. Miller --- drivers/net/ethernet/broadcom/tg3.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 67d2663b3974..17a972734ba7 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -14604,8 +14604,11 @@ static void tg3_read_vpd(struct tg3 *tp) if (j + len > block_end) goto partno; - memcpy(tp->fw_ver, &vpd_data[j], len); - strncat(tp->fw_ver, " bc ", vpdlen - len - 1); + if (len >= sizeof(tp->fw_ver)) + len = sizeof(tp->fw_ver) - 1; + memset(tp->fw_ver, 0, sizeof(tp->fw_ver)); + snprintf(tp->fw_ver, sizeof(tp->fw_ver), "%.*s bc ", len, + &vpd_data[j]); } partno: -- cgit v1.2.1 From 8abbbaf6adb46157b6bd416f7616b555cc6a332f Mon Sep 17 00:00:00 2001 From: Daniel Vetter Date: Wed, 27 Mar 2013 21:42:00 +0100 Subject: drm: don't unlock in the addfb error paths We don't grab the modeset locks any more since commit 468174f748603497e73dba9b5c6d1d9f71121486 Author: Daniel Vetter Date: Tue Dec 11 00:09:12 2012 +0100 drm: push modeset_lock_all into ->fb_create driver callbacks Reported-by: Ray Strode Cc: Ray Strode Cc: Dave Airlie Acked-by: Dave Airlie Signed-off-by: Daniel Vetter --- drivers/gpu/drm/drm_crtc.c | 2 -- 1 file changed, 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c index 792c3e3795ca..dd64a06dc5b4 100644 --- a/drivers/gpu/drm/drm_crtc.c +++ b/drivers/gpu/drm/drm_crtc.c @@ -2326,7 +2326,6 @@ int drm_mode_addfb(struct drm_device *dev, fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r); if (IS_ERR(fb)) { DRM_DEBUG_KMS("could not create framebuffer\n"); - drm_modeset_unlock_all(dev); return PTR_ERR(fb); } @@ -2506,7 +2505,6 @@ int drm_mode_addfb2(struct drm_device *dev, fb = dev->mode_config.funcs->fb_create(dev, file_priv, r); if (IS_ERR(fb)) { DRM_DEBUG_KMS("could not create framebuffer\n"); - drm_modeset_unlock_all(dev); return PTR_ERR(fb); } -- cgit v1.2.1 From b8730b403aee94db4631bfefb546a6ce8c287dc2 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 27 Mar 2013 20:49:58 +0100 Subject: iwlwifi: dvm: fix the passive-no-RX workaround Alex Romosan reported that since the mac80211 changes in "mac80211: start auth/assoc timeout on frame status" and the subsequent fixes in "mac80211: fix auth/assoc timeout handling" (commits 1672c0e31917 and 89afe614c0c) there's sometimes an issue connecting to a 5 GHz network with the iwlwifi DVM driver. The reason appears to be that since these commits any bad TX status makes mac80211 immediately try again, causing all of the authentication attempts to be quickly rejected by the firmware as it hasn't heard a beacon yet. Before, it would wait for the timeout regardless of status. To fix this, invoke the passive-no-RX workaround when not associated yet as well. This will cause the first frame to get lost, but then the driver will stop the queues and the second attempt will only be transmitted after hearing a beacon, thus delaying it appropriately to not make the firmware reject it again. Reported-by: Alex Romosan Tested-by: Alex Romosan Signed-off-by: Johannes Berg --- drivers/net/wireless/iwlwifi/dvm/rxon.c | 18 ++++++++---------- drivers/net/wireless/iwlwifi/dvm/tx.c | 2 +- 2 files changed, 9 insertions(+), 11 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/iwlwifi/dvm/rxon.c b/drivers/net/wireless/iwlwifi/dvm/rxon.c index 23be948cf162..a82b6b39d4ff 100644 --- a/drivers/net/wireless/iwlwifi/dvm/rxon.c +++ b/drivers/net/wireless/iwlwifi/dvm/rxon.c @@ -1419,6 +1419,14 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw, mutex_lock(&priv->mutex); + if (changes & BSS_CHANGED_IDLE && bss_conf->idle) { + /* + * If we go idle, then clearly no "passive-no-rx" + * workaround is needed any more, this is a reset. + */ + iwlagn_lift_passive_no_rx(priv); + } + if (unlikely(!iwl_is_ready(priv))) { IWL_DEBUG_MAC80211(priv, "leave - not ready\n"); mutex_unlock(&priv->mutex); @@ -1450,16 +1458,6 @@ void iwlagn_bss_info_changed(struct ieee80211_hw *hw, priv->timestamp = bss_conf->sync_tsf; ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK; } else { - /* - * If we disassociate while there are pending - * frames, just wake up the queues and let the - * frames "escape" ... This shouldn't really - * be happening to start with, but we should - * not get stuck in this case either since it - * can happen if userspace gets confused. - */ - iwlagn_lift_passive_no_rx(priv); - ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK; if (ctx->ctxid == IWL_RXON_CTX_BSS) diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c index 6aec2df3bb27..d1a670d7b10c 100644 --- a/drivers/net/wireless/iwlwifi/dvm/tx.c +++ b/drivers/net/wireless/iwlwifi/dvm/tx.c @@ -1192,7 +1192,7 @@ int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb, memset(&info->status, 0, sizeof(info->status)); if (status == TX_STATUS_FAIL_PASSIVE_NO_RX && - iwl_is_associated_ctx(ctx) && ctx->vif && + ctx->vif && ctx->vif->type == NL80211_IFTYPE_STATION) { /* block and stop all queues */ priv->passive_no_rx = true; -- cgit v1.2.1 From 91c5746425aed8f7188a351f1224a26aa232e4b3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Wed, 27 Mar 2013 18:28:41 +0000 Subject: aoe: reserve enough headroom on skbs Some network drivers use a non default hard_header_len Transmitted skb should take into account dev->hard_header_len, or risk crashes or expensive reallocations. In the case of aoe, lets reserve MAX_HEADER bytes. David reported a crash in defxx driver, solved by this patch. Reported-by: David Oostdyk Tested-by: David Oostdyk Signed-off-by: Eric Dumazet Cc: Ed Cashin Signed-off-by: David S. Miller --- drivers/block/aoe/aoecmd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c index 25ef5c014fca..92b6d7c51e39 100644 --- a/drivers/block/aoe/aoecmd.c +++ b/drivers/block/aoe/aoecmd.c @@ -51,8 +51,9 @@ new_skb(ulong len) { struct sk_buff *skb; - skb = alloc_skb(len, GFP_ATOMIC); + skb = alloc_skb(len + MAX_HEADER, GFP_ATOMIC); if (skb) { + skb_reserve(skb, MAX_HEADER); skb_reset_mac_header(skb); skb_reset_network_header(skb); skb->protocol = __constant_htons(ETH_P_AOE); -- cgit v1.2.1 From b43decd2c513ae44a5462a1a4c2622f0fa77c9e0 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Sun, 24 Mar 2013 15:36:38 +0100 Subject: drm/nouveau: fix handling empty channel list in ioctl's If there are no channels, chan would never end up being NULL, and so the null pointer check would fail. Solve this by initializing chan to NULL, and iterating over temp instead. Fixes oops when running intel-gpu-tools/tests/kms_flip, which attempts to do some intel ioctl's on a nouveau device. Signed-off-by: Maarten Lankhorst Cc: stable@vger.kernel.org [3.7+] Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_abi16.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c index 3b6dc883e150..5eb3e0da7c6e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_abi16.c +++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c @@ -391,7 +391,7 @@ nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS) struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_device *device = nv_device(drm->device); struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev); - struct nouveau_abi16_chan *chan, *temp; + struct nouveau_abi16_chan *chan = NULL, *temp; struct nouveau_abi16_ntfy *ntfy; struct nouveau_object *object; struct nv_dma_class args = {}; @@ -404,10 +404,11 @@ nouveau_abi16_ioctl_notifierobj_alloc(ABI16_IOCTL_ARGS) if (unlikely(nv_device(abi16->device)->card_type >= NV_C0)) return nouveau_abi16_put(abi16, -EINVAL); - list_for_each_entry_safe(chan, temp, &abi16->channels, head) { - if (chan->chan->handle == (NVDRM_CHAN | info->channel)) + list_for_each_entry(temp, &abi16->channels, head) { + if (temp->chan->handle == (NVDRM_CHAN | info->channel)) { + chan = temp; break; - chan = NULL; + } } if (!chan) @@ -459,17 +460,18 @@ nouveau_abi16_ioctl_gpuobj_free(ABI16_IOCTL_ARGS) { struct drm_nouveau_gpuobj_free *fini = data; struct nouveau_abi16 *abi16 = nouveau_abi16_get(file_priv, dev); - struct nouveau_abi16_chan *chan, *temp; + struct nouveau_abi16_chan *chan = NULL, *temp; struct nouveau_abi16_ntfy *ntfy; int ret; if (unlikely(!abi16)) return -ENOMEM; - list_for_each_entry_safe(chan, temp, &abi16->channels, head) { - if (chan->chan->handle == (NVDRM_CHAN | fini->channel)) + list_for_each_entry(temp, &abi16->channels, head) { + if (temp->chan->handle == (NVDRM_CHAN | fini->channel)) { + chan = temp; break; - chan = NULL; + } } if (!chan) -- cgit v1.2.1 From e4604d8fe8492f8120cf92d4b60b3cc90ba87bd0 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Sun, 24 Mar 2013 12:56:30 +0100 Subject: drm/nouveau: fix NULL ptr dereference from nv50_disp_intr() Op 23-03-13 12:47, Peter Hurley schreef: > On Tue, 2013-03-19 at 11:13 -0400, Peter Hurley wrote: >> On vanilla 3.9.0-rc3, I get this 100% repeatable oops after login when >> the user X session is coming up: > Perhaps I wasn't clear that this happens on every boot and is a > regression from 3.8 > > I'd be happy to help resolve this but time is of the essence; it would > be a shame to have to revert all of this for 3.9 Well it broke on my system too, so it was easy to fix. I didn't even need gdm to trigger it! >8---- This fixes regression caused by 1d7c71a3e2f7 (drm/nouveau/disp: port vblank handling to event interface), which causes a oops in the following way: BUG: unable to handle kernel NULL pointer dereference at 0000000000000001 IP: [<0000000000000001>] 0x0 PGD 0 Oops: 0010 [#1] PREEMPT SMP Modules linked in: ip6table_filter ip6_tables ebtable_nat ebtables ...... CPU 3 Pid: 0, comm: swapper/3 Not tainted 3.9.0-rc3-xeon #rc3 Dell Inc. Precision WorkStation T5400 /0RW203 RIP: 0010:[<0000000000000001>] [<0000000000000001>] 0x0 RSP: 0018:ffff8802afcc3d80 EFLAGS: 00010087 RAX: ffff88029f6e5808 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000000096 RSI: 0000000000000001 RDI: ffff88029f6e5808 RBP: ffff8802afcc3dc8 R08: 0000000000000000 R09: 0000000000000004 R10: 000000000000002c R11: ffff88029e559a98 R12: ffff8802a376cb78 R13: ffff88029f6e57e0 R14: ffff88029f6e57f8 R15: ffff88029f6e5808 FS: 0000000000000000(0000) GS:ffff8802afcc0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000001 CR3: 000000029fa67000 CR4: 00000000000007e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process swapper/3 (pid: 0, threadinfo ffff8802a355e000, task ffff8802a3535c40) Stack: ffffffffa0159d8a 0000000000000082 ffff88029f6e5820 0000000000000001 ffff88029f71aa00 0000000000000000 0000000000000000 0000000004000000 0000000004000000 ffff8802afcc3e38 ffffffffa01843b5 ffff8802afcc3df8 Call Trace: [] ? nouveau_event_trigger+0xaa/0xe0 [nouveau] [] nv50_disp_intr+0xc5/0x200 [nouveau] [] ? _raw_spin_unlock_irqrestore+0x2c/0x50 [] ? notifier_call_chain+0x4d/0x70 [] nouveau_mc_intr+0xb5/0x110 [nouveau] [] nouveau_irq_handler+0x6f/0x80 [nouveau] [] handle_irq_event_percpu+0x75/0x260 [] handle_irq_event+0x48/0x70 [] handle_fasteoi_irq+0x5a/0x100 [] handle_irq+0x22/0x40 [] do_IRQ+0x5a/0xd0 [] common_interrupt+0x6d/0x6d [] ? native_safe_halt+0x6/0x10 [] default_idle+0x3d/0x170 [] cpu_idle+0x116/0x130 [] start_secondary+0x251/0x258 Code: Bad RIP value. RIP [<0000000000000001>] 0x0 RSP CR2: 0000000000000001 ---[ end trace 907323cb8ce6f301 ]--- Signed-off-by: Maarten Lankhorst Signed-off-by: Ben Skeggs --- drivers/gpu/drm/nouveau/nouveau_drm.c | 32 ++++++++++++++++++++------------ drivers/gpu/drm/nouveau/nouveau_drm.h | 2 +- 2 files changed, 21 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index d1099365bfc1..c95decf543e9 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -71,12 +71,26 @@ module_param_named(modeset, nouveau_modeset, int, 0400); static struct drm_driver driver; +static int +nouveau_drm_vblank_handler(struct nouveau_eventh *event, int head) +{ + struct nouveau_drm *drm = + container_of(event, struct nouveau_drm, vblank[head]); + drm_handle_vblank(drm->dev, head); + return NVKM_EVENT_KEEP; +} + static int nouveau_drm_vblank_enable(struct drm_device *dev, int head) { struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_disp *pdisp = nouveau_disp(drm->device); - nouveau_event_get(pdisp->vblank, head, &drm->vblank); + + if (WARN_ON_ONCE(head > ARRAY_SIZE(drm->vblank))) + return -EIO; + WARN_ON_ONCE(drm->vblank[head].func); + drm->vblank[head].func = nouveau_drm_vblank_handler; + nouveau_event_get(pdisp->vblank, head, &drm->vblank[head]); return 0; } @@ -85,16 +99,11 @@ nouveau_drm_vblank_disable(struct drm_device *dev, int head) { struct nouveau_drm *drm = nouveau_drm(dev); struct nouveau_disp *pdisp = nouveau_disp(drm->device); - nouveau_event_put(pdisp->vblank, head, &drm->vblank); -} - -static int -nouveau_drm_vblank_handler(struct nouveau_eventh *event, int head) -{ - struct nouveau_drm *drm = - container_of(event, struct nouveau_drm, vblank); - drm_handle_vblank(drm->dev, head); - return NVKM_EVENT_KEEP; + if (drm->vblank[head].func) + nouveau_event_put(pdisp->vblank, head, &drm->vblank[head]); + else + WARN_ON_ONCE(1); + drm->vblank[head].func = NULL; } static u64 @@ -292,7 +301,6 @@ nouveau_drm_load(struct drm_device *dev, unsigned long flags) dev->dev_private = drm; drm->dev = dev; - drm->vblank.func = nouveau_drm_vblank_handler; INIT_LIST_HEAD(&drm->clients); spin_lock_init(&drm->tile.lock); diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.h b/drivers/gpu/drm/nouveau/nouveau_drm.h index b25df374c901..9c39bafbef2c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.h +++ b/drivers/gpu/drm/nouveau/nouveau_drm.h @@ -113,7 +113,7 @@ struct nouveau_drm { struct nvbios vbios; struct nouveau_display *display; struct backlight_device *backlight; - struct nouveau_eventh vblank; + struct nouveau_eventh vblank[4]; /* power management */ struct nouveau_pm *pm; -- cgit v1.2.1 From 5b4617d82020addf244c8c5206270e49ef9933d6 Mon Sep 17 00:00:00 2001 From: Alexey Klimov Date: Thu, 28 Mar 2013 00:07:29 +0400 Subject: HID: fix Masterkit MA901 hid quirks This patch reverts commit 0322bd3980 ("usb hid quirks for Masterkit MA901 usb radio") and adds checks in hid_ignore() for Masterkit MA901 usb radio device. This usb radio device shares USB ID with many Atmel V-USB (and probably other) devices so patch sorts things out by checking name, vendor, product of hid device. Signed-off-by: Alexey Klimov Acked-by: Mauro Carvalho Chehab Signed-off-by: Jiri Kosina --- drivers/hid/hid-core.c | 13 ++++++++++++- drivers/hid/hid-ids.h | 5 ++--- 2 files changed, 14 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c index 512b01c04ea7..aa341d135867 100644 --- a/drivers/hid/hid-core.c +++ b/drivers/hid/hid-core.c @@ -2077,7 +2077,6 @@ static const struct hid_device_id hid_ignore_list[] = { { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) }, { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) }, { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) }, - { HID_USB_DEVICE(USB_VENDOR_ID_MASTERKIT, USB_DEVICE_ID_MASTERKIT_MA901RADIO) }, { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) }, { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) }, { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) }, @@ -2244,6 +2243,18 @@ bool hid_ignore(struct hid_device *hdev) hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST)) return true; break; + case USB_VENDOR_ID_ATMEL_V_USB: + /* Masterkit MA901 usb radio based on Atmel tiny85 chip and + * it has the same USB ID as many Atmel V-USB devices. This + * usb radio is handled by radio-ma901.c driver so we want + * ignore the hid. Check the name, bus, product and ignore + * if we have MA901 usb radio. + */ + if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB && + hdev->bus == BUS_USB && + strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0) + return true; + break; } if (hdev->type == HID_TYPE_USBMOUSE && diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index c4388776f4e4..5309fd5eb0eb 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -158,6 +158,8 @@ #define USB_VENDOR_ID_ATMEL 0x03eb #define USB_DEVICE_ID_ATMEL_MULTITOUCH 0x211c #define USB_DEVICE_ID_ATMEL_MXT_DIGITIZER 0x2118 +#define USB_VENDOR_ID_ATMEL_V_USB 0x16c0 +#define USB_DEVICE_ID_ATMEL_V_USB 0x05df #define USB_VENDOR_ID_AUREAL 0x0755 #define USB_DEVICE_ID_AUREAL_W01RN 0x2626 @@ -557,9 +559,6 @@ #define USB_VENDOR_ID_MADCATZ 0x0738 #define USB_DEVICE_ID_MADCATZ_BEATPAD 0x4540 -#define USB_VENDOR_ID_MASTERKIT 0x16c0 -#define USB_DEVICE_ID_MASTERKIT_MA901RADIO 0x05df - #define USB_VENDOR_ID_MCC 0x09db #define USB_DEVICE_ID_MCC_PMD1024LS 0x0076 #define USB_DEVICE_ID_MCC_PMD1208LS 0x007a -- cgit v1.2.1 From 30b29537bcba070b3df8d7d24c1975676a1a6a4f Mon Sep 17 00:00:00 2001 From: Alexey Klimov Date: Thu, 28 Mar 2013 00:08:19 +0400 Subject: media: radio-ma901: return ENODEV in probe if usb_device doesn't match Masterkit MA901 usb radio device shares USB ID with Atmel V-USB devices. This patch adds additional checks in usb_ma901radio_probe() and if product or manufacturer doesn't match we return -ENODEV and don't continue. This allows hid drivers to handle not MA901 device. Signed-off-by: Alexey Klimov Acked-by: Mauro Carvalho Chehab Signed-off-by: Jiri Kosina --- drivers/media/radio/radio-ma901.c | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'drivers') diff --git a/drivers/media/radio/radio-ma901.c b/drivers/media/radio/radio-ma901.c index c61f590029ad..348dafc0318a 100644 --- a/drivers/media/radio/radio-ma901.c +++ b/drivers/media/radio/radio-ma901.c @@ -347,9 +347,20 @@ static void usb_ma901radio_release(struct v4l2_device *v4l2_dev) static int usb_ma901radio_probe(struct usb_interface *intf, const struct usb_device_id *id) { + struct usb_device *dev = interface_to_usbdev(intf); struct ma901radio_device *radio; int retval = 0; + /* Masterkit MA901 usb radio has the same USB ID as many others + * Atmel V-USB devices. Let's make additional checks to be sure + * that this is our device. + */ + + if (dev->product && dev->manufacturer && + (strncmp(dev->product, "MA901", 5) != 0 + || strncmp(dev->manufacturer, "www.masterkit.ru", 16) != 0)) + return -ENODEV; + radio = kzalloc(sizeof(struct ma901radio_device), GFP_KERNEL); if (!radio) { dev_err(&intf->dev, "kzalloc for ma901radio_device failed\n"); -- cgit v1.2.1 From 9cfe8b156c21cf340b3a10ecb3022fbbc1c39185 Mon Sep 17 00:00:00 2001 From: Mirko Lindner Date: Tue, 26 Mar 2013 06:38:35 +0000 Subject: sky2: Receive Overflows not counted The sky2 driver doesn't count the Receive Overflows because the MAC interrupt for this event is not set in the MAC's interrupt mask. The MAC's interrupt mask is set only for Transmit FIFO Underruns. Fix: The correct setting should be (GM_IS_TX_FF_UR | GM_IS_RX_FF_OR) Otherwise the Receive Overflow event will not generate any interrupt. The Receive Overflow interrupt is handled correctly Signed-off-by: Mirko Lindner Acked-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/sky2.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/sky2.h b/drivers/net/ethernet/marvell/sky2.h index 615ac63ea860..ec6dcd80152b 100644 --- a/drivers/net/ethernet/marvell/sky2.h +++ b/drivers/net/ethernet/marvell/sky2.h @@ -2074,7 +2074,7 @@ enum { GM_IS_RX_FF_OR = 1<<1, /* Receive FIFO Overrun */ GM_IS_RX_COMPL = 1<<0, /* Frame Reception Complete */ -#define GMAC_DEF_MSK GM_IS_TX_FF_UR +#define GMAC_DEF_MSK (GM_IS_TX_FF_UR | GM_IS_RX_FF_OR) }; /* GMAC_LINK_CTRL 16 bit GMAC Link Control Reg (YUKON only) */ -- cgit v1.2.1 From 74f9f42c1c1650e74fb464f76644c9041f996851 Mon Sep 17 00:00:00 2001 From: Mirko Lindner Date: Tue, 26 Mar 2013 06:38:42 +0000 Subject: sky2: Threshold for Pause Packet is set wrong The sky2 driver sets the Rx Upper Threshold for Pause Packet generation to a wrong value which leads to only 2kB of RAM remaining space. This can lead to Rx overflow errors even with activated flow-control. Fix: We should increase the value to 8192/8 Signed-off-by: Mirko Lindner Acked-by: Stephen Hemminger Signed-off-by: David S. Miller --- drivers/net/ethernet/marvell/sky2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index fc07ca35721b..6a0e671fcecd 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -1067,7 +1067,7 @@ static void sky2_ramset(struct sky2_hw *hw, u16 q, u32 start, u32 space) sky2_write32(hw, RB_ADDR(q, RB_RX_UTHP), tp); sky2_write32(hw, RB_ADDR(q, RB_RX_LTHP), space/2); - tp = space - 2048/8; + tp = space - 8192/8; sky2_write32(hw, RB_ADDR(q, RB_RX_UTPP), tp); sky2_write32(hw, RB_ADDR(q, RB_RX_LTPP), space/4); } else { -- cgit v1.2.1 From 1bc7db16782c2a581fb4d53ca853631050f31611 Mon Sep 17 00:00:00 2001 From: "nikolay@redhat.com" Date: Wed, 27 Mar 2013 03:32:41 +0000 Subject: bonding: fix disabling of arp_interval and miimon Currently if either arp_interval or miimon is disabled, they both get disabled, and upon disabling they get executed once more which is not the proper behaviour. Also when doing a no-op and disabling an already disabled one, the other again gets disabled. Also fix the error messages with the proper valid ranges, and a small typo fix in the up delay error message (outputting "down delay", instead of "up delay"). Signed-off-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- drivers/net/bonding/bond_sysfs.c | 92 +++++++++++++++++++++------------------- 1 file changed, 48 insertions(+), 44 deletions(-) (limited to 'drivers') diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c index db103e03ba05..ea7a388f4843 100644 --- a/drivers/net/bonding/bond_sysfs.c +++ b/drivers/net/bonding/bond_sysfs.c @@ -527,7 +527,7 @@ static ssize_t bonding_store_arp_interval(struct device *d, goto out; } if (new_value < 0) { - pr_err("%s: Invalid arp_interval value %d not in range 1-%d; rejected.\n", + pr_err("%s: Invalid arp_interval value %d not in range 0-%d; rejected.\n", bond->dev->name, new_value, INT_MAX); ret = -EINVAL; goto out; @@ -542,14 +542,15 @@ static ssize_t bonding_store_arp_interval(struct device *d, pr_info("%s: Setting ARP monitoring interval to %d.\n", bond->dev->name, new_value); bond->params.arp_interval = new_value; - if (bond->params.miimon) { - pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n", - bond->dev->name, bond->dev->name); - bond->params.miimon = 0; - } - if (!bond->params.arp_targets[0]) { - pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n", - bond->dev->name); + if (new_value) { + if (bond->params.miimon) { + pr_info("%s: ARP monitoring cannot be used with MII monitoring. %s Disabling MII monitoring.\n", + bond->dev->name, bond->dev->name); + bond->params.miimon = 0; + } + if (!bond->params.arp_targets[0]) + pr_info("%s: ARP monitoring has been set up, but no ARP targets have been specified.\n", + bond->dev->name); } if (bond->dev->flags & IFF_UP) { /* If the interface is up, we may need to fire off @@ -557,10 +558,13 @@ static ssize_t bonding_store_arp_interval(struct device *d, * timer will get fired off when the open function * is called. */ - cancel_delayed_work_sync(&bond->mii_work); - queue_delayed_work(bond->wq, &bond->arp_work, 0); + if (!new_value) { + cancel_delayed_work_sync(&bond->arp_work); + } else { + cancel_delayed_work_sync(&bond->mii_work); + queue_delayed_work(bond->wq, &bond->arp_work, 0); + } } - out: rtnl_unlock(); return ret; @@ -702,7 +706,7 @@ static ssize_t bonding_store_downdelay(struct device *d, } if (new_value < 0) { pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n", - bond->dev->name, new_value, 1, INT_MAX); + bond->dev->name, new_value, 0, INT_MAX); ret = -EINVAL; goto out; } else { @@ -757,8 +761,8 @@ static ssize_t bonding_store_updelay(struct device *d, goto out; } if (new_value < 0) { - pr_err("%s: Invalid down delay value %d not in range %d-%d; rejected.\n", - bond->dev->name, new_value, 1, INT_MAX); + pr_err("%s: Invalid up delay value %d not in range %d-%d; rejected.\n", + bond->dev->name, new_value, 0, INT_MAX); ret = -EINVAL; goto out; } else { @@ -968,37 +972,37 @@ static ssize_t bonding_store_miimon(struct device *d, } if (new_value < 0) { pr_err("%s: Invalid miimon value %d not in range %d-%d; rejected.\n", - bond->dev->name, new_value, 1, INT_MAX); + bond->dev->name, new_value, 0, INT_MAX); ret = -EINVAL; goto out; - } else { - pr_info("%s: Setting MII monitoring interval to %d.\n", - bond->dev->name, new_value); - bond->params.miimon = new_value; - if (bond->params.updelay) - pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n", - bond->dev->name, - bond->params.updelay * bond->params.miimon); - if (bond->params.downdelay) - pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n", - bond->dev->name, - bond->params.downdelay * bond->params.miimon); - if (bond->params.arp_interval) { - pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n", - bond->dev->name); - bond->params.arp_interval = 0; - if (bond->params.arp_validate) { - bond->params.arp_validate = - BOND_ARP_VALIDATE_NONE; - } - } - - if (bond->dev->flags & IFF_UP) { - /* If the interface is up, we may need to fire off - * the MII timer. If the interface is down, the - * timer will get fired off when the open function - * is called. - */ + } + pr_info("%s: Setting MII monitoring interval to %d.\n", + bond->dev->name, new_value); + bond->params.miimon = new_value; + if (bond->params.updelay) + pr_info("%s: Note: Updating updelay (to %d) since it is a multiple of the miimon value.\n", + bond->dev->name, + bond->params.updelay * bond->params.miimon); + if (bond->params.downdelay) + pr_info("%s: Note: Updating downdelay (to %d) since it is a multiple of the miimon value.\n", + bond->dev->name, + bond->params.downdelay * bond->params.miimon); + if (new_value && bond->params.arp_interval) { + pr_info("%s: MII monitoring cannot be used with ARP monitoring. Disabling ARP monitoring...\n", + bond->dev->name); + bond->params.arp_interval = 0; + if (bond->params.arp_validate) + bond->params.arp_validate = BOND_ARP_VALIDATE_NONE; + } + if (bond->dev->flags & IFF_UP) { + /* If the interface is up, we may need to fire off + * the MII timer. If the interface is down, the + * timer will get fired off when the open function + * is called. + */ + if (!new_value) { + cancel_delayed_work_sync(&bond->mii_work); + } else { cancel_delayed_work_sync(&bond->arp_work); queue_delayed_work(bond->wq, &bond->mii_work, 0); } -- cgit v1.2.1 From 4c51e53689569398d656e631c17308d9b8e84650 Mon Sep 17 00:00:00 2001 From: Steve Glendinning Date: Thu, 28 Mar 2013 02:34:41 +0000 Subject: smsc75xx: fix jumbo frame support This patch enables RX of jumbo frames for LAN7500. Previously the driver would transmit jumbo frames succesfully but would drop received jumbo frames (incrementing the interface errors count). With this patch applied the device can succesfully receive jumbo frames up to MTU 9000 (9014 bytes on the wire including ethernet header). Signed-off-by: Steve Glendinning Signed-off-by: David S. Miller --- drivers/net/usb/smsc75xx.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index 9abe51710f22..1a15ec14c386 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -914,8 +914,12 @@ static int smsc75xx_set_rx_max_frame_length(struct usbnet *dev, int size) static int smsc75xx_change_mtu(struct net_device *netdev, int new_mtu) { struct usbnet *dev = netdev_priv(netdev); + int ret; + + if (new_mtu > MAX_SINGLE_PACKET_SIZE) + return -EINVAL; - int ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu); + ret = smsc75xx_set_rx_max_frame_length(dev, new_mtu + ETH_HLEN); if (ret < 0) { netdev_warn(dev->net, "Failed to set mac rx frame length\n"); return ret; @@ -1324,7 +1328,7 @@ static int smsc75xx_reset(struct usbnet *dev) netif_dbg(dev, ifup, dev->net, "FCT_TX_CTL set to 0x%08x\n", buf); - ret = smsc75xx_set_rx_max_frame_length(dev, 1514); + ret = smsc75xx_set_rx_max_frame_length(dev, dev->net->mtu + ETH_HLEN); if (ret < 0) { netdev_warn(dev->net, "Failed to set max rx frame length\n"); return ret; @@ -2134,8 +2138,8 @@ static int smsc75xx_rx_fixup(struct usbnet *dev, struct sk_buff *skb) else if (rx_cmd_a & (RX_CMD_A_LONG | RX_CMD_A_RUNT)) dev->net->stats.rx_frame_errors++; } else { - /* ETH_FRAME_LEN + 4(CRC) + 2(COE) + 4(Vlan) */ - if (unlikely(size > (ETH_FRAME_LEN + 12))) { + /* MAX_SINGLE_PACKET_SIZE + 4(CRC) + 2(COE) + 4(Vlan) */ + if (unlikely(size > (MAX_SINGLE_PACKET_SIZE + ETH_HLEN + 12))) { netif_dbg(dev, rx_err, dev->net, "size err rx_cmd_a=0x%08x\n", rx_cmd_a); -- cgit v1.2.1 From dc574f1d52d893f516f3786ff7635450bac00eef Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Thu, 28 Mar 2013 11:32:44 +0000 Subject: net: calxedaxgmac: fix rx ring handling when OOM If skb allocation for the rx ring fails repeatedly, we can reach a point were the ring is empty. In this condition, the driver is out of sync with the h/w. While this has always been possible, the removal of the skb recycling seems to have made triggering this problem easier. Signed-off-by: Rob Herring Signed-off-by: David S. Miller --- drivers/net/ethernet/calxeda/xgmac.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers') diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index a170065b5973..bb1e80bfa78a 100644 --- a/drivers/net/ethernet/calxeda/xgmac.c +++ b/drivers/net/ethernet/calxeda/xgmac.c @@ -1141,6 +1141,9 @@ static int xgmac_rx(struct xgmac_priv *priv, int limit) struct sk_buff *skb; int frame_len; + if (!dma_ring_cnt(priv->rx_head, priv->rx_tail, DMA_RX_RING_SZ)) + break; + entry = priv->rx_tail; p = priv->dma_rx + entry; if (desc_get_owner(p)) -- cgit v1.2.1 From e6c3827dcfe53dd78b824d2ee4007a216ada739e Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Thu, 28 Mar 2013 11:32:45 +0000 Subject: net: calxedaxgmac: Wake-on-LAN fixes WOL is broken because the magic packet status bit is getting set rather than the enable bit. The PMT interrupt is not getting serviced because the PMT interrupt is also enabled on the global interrupt, but not cleared by the global interrupt and the global interrupt is higher priority. This fixes both of these issues to get WOL working. There's still a problem with receive after resume, but at least now we can wake-up. Signed-off-by: Rob Herring Signed-off-by: David S. Miller --- drivers/net/ethernet/calxeda/xgmac.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/calxeda/xgmac.c b/drivers/net/ethernet/calxeda/xgmac.c index bb1e80bfa78a..b0ebc9f6d55e 100644 --- a/drivers/net/ethernet/calxeda/xgmac.c +++ b/drivers/net/ethernet/calxeda/xgmac.c @@ -163,6 +163,7 @@ #define XGMAC_FLOW_CTRL_FCB_BPA 0x00000001 /* Flow Control Busy ... */ /* XGMAC_INT_STAT reg */ +#define XGMAC_INT_STAT_PMTIM 0x00800000 /* PMT Interrupt Mask */ #define XGMAC_INT_STAT_PMT 0x0080 /* PMT Interrupt Status */ #define XGMAC_INT_STAT_LPI 0x0040 /* LPI Interrupt Status */ @@ -960,6 +961,9 @@ static int xgmac_hw_init(struct net_device *dev) writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_STATUS); writel(DMA_INTR_DEFAULT_MASK, ioaddr + XGMAC_DMA_INTR_ENA); + /* Mask power mgt interrupt */ + writel(XGMAC_INT_STAT_PMTIM, ioaddr + XGMAC_INT_STAT); + /* XGMAC requires AXI bus init. This is a 'magic number' for now */ writel(0x0077000E, ioaddr + XGMAC_DMA_AXI_BUS); @@ -1828,7 +1832,7 @@ static void xgmac_pmt(void __iomem *ioaddr, unsigned long mode) unsigned int pmt = 0; if (mode & WAKE_MAGIC) - pmt |= XGMAC_PMT_POWERDOWN | XGMAC_PMT_MAGIC_PKT; + pmt |= XGMAC_PMT_POWERDOWN | XGMAC_PMT_MAGIC_PKT_EN; if (mode & WAKE_UCAST) pmt |= XGMAC_PMT_POWERDOWN | XGMAC_PMT_GLBL_UNICAST; -- cgit v1.2.1 From 188ab1b105c96656f6bcfb49d0d8bb1b1936b632 Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Thu, 28 Mar 2013 18:10:50 +0000 Subject: atl1e: drop pci-msi support because of packet corruption MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Usage of pci-msi results in corrupted dma packet transfers to the host. Reported-by: rebelyouth Cc: Huang, Xiong Tested-by: Christian Sünkenberg Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/atl1e/atl1e.h | 1 - drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 19 ++----------------- 2 files changed, 2 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e.h b/drivers/net/ethernet/atheros/atl1e/atl1e.h index 829b5ad71d0d..edfdf6b950e7 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e.h +++ b/drivers/net/ethernet/atheros/atl1e/atl1e.h @@ -438,7 +438,6 @@ struct atl1e_adapter { struct atl1e_hw hw; struct atl1e_hw_stats hw_stats; - bool have_msi; u32 wol; u16 link_speed; u16 link_duplex; diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c index 92f4734f860d..f73d5609439a 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c @@ -1849,34 +1849,19 @@ static void atl1e_free_irq(struct atl1e_adapter *adapter) struct net_device *netdev = adapter->netdev; free_irq(adapter->pdev->irq, netdev); - - if (adapter->have_msi) - pci_disable_msi(adapter->pdev); } static int atl1e_request_irq(struct atl1e_adapter *adapter) { struct pci_dev *pdev = adapter->pdev; struct net_device *netdev = adapter->netdev; - int flags = 0; int err = 0; - adapter->have_msi = true; - err = pci_enable_msi(pdev); - if (err) { - netdev_dbg(netdev, - "Unable to allocate MSI interrupt Error: %d\n", err); - adapter->have_msi = false; - } - - if (!adapter->have_msi) - flags |= IRQF_SHARED; - err = request_irq(pdev->irq, atl1e_intr, flags, netdev->name, netdev); + err = request_irq(pdev->irq, atl1e_intr, IRQF_SHARED, netdev->name, + netdev); if (err) { netdev_dbg(adapter->netdev, "Unable to allocate interrupt Error: %d\n", err); - if (adapter->have_msi) - pci_disable_msi(pdev); return err; } netdev_dbg(netdev, "atl1e_request_irq OK\n"); -- cgit v1.2.1 From 14bc435ea54cb888409efb54fc6b76c13ef530e9 Mon Sep 17 00:00:00 2001 From: "Max.Nekludov@us.elster.com" Date: Fri, 29 Mar 2013 05:27:36 +0000 Subject: ks8851: Fix interpretation of rxlen field. According to the Datasheet (page 52): 15-12 Reserved 11-0 RXBC Receive Byte Count This field indicates the present received frame byte size. The code has a bug: rxh = ks8851_rdreg32(ks, KS_RXFHSR); rxstat = rxh & 0xffff; rxlen = rxh >> 16; // BUG!!! 0xFFF mask should be applied Signed-off-by: Max Nekludov Signed-off-by: David S. Miller --- drivers/net/ethernet/micrel/ks8851.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/micrel/ks8851.c b/drivers/net/ethernet/micrel/ks8851.c index 33bcb63d56a2..8fb481252e2c 100644 --- a/drivers/net/ethernet/micrel/ks8851.c +++ b/drivers/net/ethernet/micrel/ks8851.c @@ -528,7 +528,7 @@ static void ks8851_rx_pkts(struct ks8851_net *ks) for (; rxfc != 0; rxfc--) { rxh = ks8851_rdreg32(ks, KS_RXFHSR); rxstat = rxh & 0xffff; - rxlen = rxh >> 16; + rxlen = (rxh >> 16) & 0xfff; netif_dbg(ks, rx_status, ks->netdev, "rx: stat 0x%04x, len 0x%04x\n", rxstat, rxlen); -- cgit v1.2.1 From 165b1b8bbc17c9469b053bab78b11b7cbce6d161 Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Fri, 29 Mar 2013 16:30:07 +0530 Subject: virtio: console: rename cvq_lock to c_ivq_lock The cvq_lock was taken for the c_ivq. Rename the lock to make that obvious. We'll also add a lock around the c_ovq in the next commit, so there's no ambiguity. Signed-off-by: Amit Shah Reviewed-by: Asias He Reviewed-by: Wanlong Gao Signed-off-by: Rusty Russell Cc: stable@kernel.org --- drivers/char/virtio_console.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index e6ba6b7887e9..2dd9134faa27 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -149,7 +149,7 @@ struct ports_device { spinlock_t ports_lock; /* To protect the vq operations for the control channel */ - spinlock_t cvq_lock; + spinlock_t c_ivq_lock; /* The current config space is stored here */ struct virtio_console_config config; @@ -1709,23 +1709,23 @@ static void control_work_handler(struct work_struct *work) portdev = container_of(work, struct ports_device, control_work); vq = portdev->c_ivq; - spin_lock(&portdev->cvq_lock); + spin_lock(&portdev->c_ivq_lock); while ((buf = virtqueue_get_buf(vq, &len))) { - spin_unlock(&portdev->cvq_lock); + spin_unlock(&portdev->c_ivq_lock); buf->len = len; buf->offset = 0; handle_control_message(portdev, buf); - spin_lock(&portdev->cvq_lock); + spin_lock(&portdev->c_ivq_lock); if (add_inbuf(portdev->c_ivq, buf) < 0) { dev_warn(&portdev->vdev->dev, "Error adding buffer to queue\n"); free_buf(buf, false); } } - spin_unlock(&portdev->cvq_lock); + spin_unlock(&portdev->c_ivq_lock); } static void out_intr(struct virtqueue *vq) @@ -1996,10 +1996,11 @@ static int virtcons_probe(struct virtio_device *vdev) if (multiport) { unsigned int nr_added_bufs; - spin_lock_init(&portdev->cvq_lock); + spin_lock_init(&portdev->c_ivq_lock); INIT_WORK(&portdev->control_work, &control_work_handler); - nr_added_bufs = fill_queue(portdev->c_ivq, &portdev->cvq_lock); + nr_added_bufs = fill_queue(portdev->c_ivq, + &portdev->c_ivq_lock); if (!nr_added_bufs) { dev_err(&vdev->dev, "Error allocating buffers for control queue\n"); @@ -2150,7 +2151,7 @@ static int virtcons_restore(struct virtio_device *vdev) return ret; if (use_multiport(portdev)) - fill_queue(portdev->c_ivq, &portdev->cvq_lock); + fill_queue(portdev->c_ivq, &portdev->c_ivq_lock); list_for_each_entry(port, &portdev->ports, list) { port->in_vq = portdev->in_vqs[port->id]; -- cgit v1.2.1 From 9ba5c80b1aea8648a3efe5f22dc1f7cacdfbeeb8 Mon Sep 17 00:00:00 2001 From: Amit Shah Date: Fri, 29 Mar 2013 16:30:08 +0530 Subject: virtio: console: add locking around c_ovq operations When multiple ovq operations are being performed (lots of open/close operations on virtio_console fds), the __send_control_msg() function can get confused without locking. A simple recipe to cause badness is: * create a QEMU VM with two virtio-serial ports * in the guest, do while true;do echo abc >/dev/vport0p1;done while true;do echo edf >/dev/vport0p2;done In one run, this caused a panic in __send_control_msg(). In another, I got virtio_console virtio0: control-o:id 0 is not a head! This also results repeated messages similar to these on the host: qemu-kvm: virtio-serial-bus: Unexpected port id 478762112 for device virtio-serial-bus.0 qemu-kvm: virtio-serial-bus: Unexpected port id 478762368 for device virtio-serial-bus.0 Reported-by: FuXiangChun Signed-off-by: Amit Shah Reviewed-by: Wanlong Gao Reviewed-by: Asias He Signed-off-by: Rusty Russell Cc: stable@kernel.org --- drivers/char/virtio_console.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers') diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index 2dd9134faa27..ce5f3fc25d6d 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -150,6 +150,7 @@ struct ports_device { /* To protect the vq operations for the control channel */ spinlock_t c_ivq_lock; + spinlock_t c_ovq_lock; /* The current config space is stored here */ struct virtio_console_config config; @@ -569,11 +570,14 @@ static ssize_t __send_control_msg(struct ports_device *portdev, u32 port_id, vq = portdev->c_ovq; sg_init_one(sg, &cpkt, sizeof(cpkt)); + + spin_lock(&portdev->c_ovq_lock); if (virtqueue_add_buf(vq, sg, 1, 0, &cpkt, GFP_ATOMIC) == 0) { virtqueue_kick(vq); while (!virtqueue_get_buf(vq, &len)) cpu_relax(); } + spin_unlock(&portdev->c_ovq_lock); return 0; } @@ -1997,6 +2001,7 @@ static int virtcons_probe(struct virtio_device *vdev) unsigned int nr_added_bufs; spin_lock_init(&portdev->c_ivq_lock); + spin_lock_init(&portdev->c_ovq_lock); INIT_WORK(&portdev->control_work, &control_work_handler); nr_added_bufs = fill_queue(portdev->c_ivq, -- cgit v1.2.1 From 9593b0b1179c526436f14849a9587fd2aae12040 Mon Sep 17 00:00:00 2001 From: Samuel Ortiz Date: Thu, 28 Mar 2013 10:39:28 +0100 Subject: NFC: microread: Fix build failure due to a new MEI bus API uuid device_id field is removed and mei_device is renamed mei_cl_device. Signed-off-by: Samuel Ortiz --- drivers/nfc/microread/mei.c | 38 +++++++++++++++++--------------------- 1 file changed, 17 insertions(+), 21 deletions(-) (limited to 'drivers') diff --git a/drivers/nfc/microread/mei.c b/drivers/nfc/microread/mei.c index eef38cfd812e..ca33ae193935 100644 --- a/drivers/nfc/microread/mei.c +++ b/drivers/nfc/microread/mei.c @@ -22,7 +22,7 @@ #include #include #include -#include +#include #include #include @@ -32,9 +32,6 @@ #define MICROREAD_DRIVER_NAME "microread" -#define MICROREAD_UUID UUID_LE(0x0bb17a78, 0x2a8e, 0x4c50, 0x94, \ - 0xd4, 0x50, 0x26, 0x67, 0x23, 0x77, 0x5c) - struct mei_nfc_hdr { u8 cmd; u8 status; @@ -48,7 +45,7 @@ struct mei_nfc_hdr { #define MEI_NFC_MAX_READ (MEI_NFC_HEADER_SIZE + MEI_NFC_MAX_HCI_PAYLOAD) struct microread_mei_phy { - struct mei_device *mei_device; + struct mei_cl_device *device; struct nfc_hci_dev *hdev; int powered; @@ -105,14 +102,14 @@ static int microread_mei_write(void *phy_id, struct sk_buff *skb) MEI_DUMP_SKB_OUT("mei frame sent", skb); - r = mei_send(phy->device, skb->data, skb->len); + r = mei_cl_send(phy->device, skb->data, skb->len); if (r > 0) r = 0; return r; } -static void microread_event_cb(struct mei_device *device, u32 events, +static void microread_event_cb(struct mei_cl_device *device, u32 events, void *context) { struct microread_mei_phy *phy = context; @@ -120,7 +117,7 @@ static void microread_event_cb(struct mei_device *device, u32 events, if (phy->hard_fault != 0) return; - if (events & BIT(MEI_EVENT_RX)) { + if (events & BIT(MEI_CL_EVENT_RX)) { struct sk_buff *skb; int reply_size; @@ -128,7 +125,7 @@ static void microread_event_cb(struct mei_device *device, u32 events, if (!skb) return; - reply_size = mei_recv(device, skb->data, MEI_NFC_MAX_READ); + reply_size = mei_cl_recv(device, skb->data, MEI_NFC_MAX_READ); if (reply_size < MEI_NFC_HEADER_SIZE) { kfree(skb); return; @@ -149,8 +146,8 @@ static struct nfc_phy_ops mei_phy_ops = { .disable = microread_mei_disable, }; -static int microread_mei_probe(struct mei_device *device, - const struct mei_id *id) +static int microread_mei_probe(struct mei_cl_device *device, + const struct mei_cl_device_id *id) { struct microread_mei_phy *phy; int r; @@ -164,9 +161,9 @@ static int microread_mei_probe(struct mei_device *device, } phy->device = device; - mei_set_clientdata(device, phy); + mei_cl_set_drvdata(device, phy); - r = mei_register_event_cb(device, microread_event_cb, phy); + r = mei_cl_register_event_cb(device, microread_event_cb, phy); if (r) { pr_err(MICROREAD_DRIVER_NAME ": event cb registration failed\n"); goto err_out; @@ -186,9 +183,9 @@ err_out: return r; } -static int microread_mei_remove(struct mei_device *device) +static int microread_mei_remove(struct mei_cl_device *device) { - struct microread_mei_phy *phy = mei_get_clientdata(device); + struct microread_mei_phy *phy = mei_cl_get_drvdata(device); pr_info("Removing microread\n"); @@ -202,16 +199,15 @@ static int microread_mei_remove(struct mei_device *device) return 0; } -static struct mei_id microread_mei_tbl[] = { - { MICROREAD_DRIVER_NAME, MICROREAD_UUID }, +static struct mei_cl_device_id microread_mei_tbl[] = { + { MICROREAD_DRIVER_NAME }, /* required last entry */ { } }; - MODULE_DEVICE_TABLE(mei, microread_mei_tbl); -static struct mei_driver microread_driver = { +static struct mei_cl_driver microread_driver = { .id_table = microread_mei_tbl, .name = MICROREAD_DRIVER_NAME, @@ -225,7 +221,7 @@ static int microread_mei_init(void) pr_debug(DRIVER_DESC ": %s\n", __func__); - r = mei_driver_register(µread_driver); + r = mei_cl_driver_register(µread_driver); if (r) { pr_err(MICROREAD_DRIVER_NAME ": driver registration failed\n"); return r; @@ -236,7 +232,7 @@ static int microread_mei_init(void) static void microread_mei_exit(void) { - mei_driver_unregister(µread_driver); + mei_cl_driver_unregister(µread_driver); } module_init(microread_mei_init); -- cgit v1.2.1 From 1e1b812bbe1069fc8e2e372dca7d5f541c7a8ceb Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sun, 31 Mar 2013 09:50:07 +0000 Subject: sh_eth: fix handling of no LINK signal The code handling the absent LINK signal (or the absent PSR register -- which reflects the state of this signal) is quite naive and has probably never really worked. It's probably enough to say that this code is executed only on the LINK change interrupt (sic!) but even if we actually have the signal and choose to ignore it (it might be connected to PHY's link/activity LED output as on the Renesas BOCK-W board), sh_eth_adjust_link() on which this code relies to update 'mdp->link' gets executed later than the LINK change interrupt where it is checked, and so RX/TX never get enabled via ECMR register. So, ignore the LINK changed interrupt iff LINK signal is absent (or just chosen not to be used) or PSR register is absent, and enable/disable RX/TX directly in sh_eth_adjust_link() in this case. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index bf5e3cf97c4d..1ca8b2b10adc 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1216,10 +1216,7 @@ static void sh_eth_error(struct net_device *ndev, int intr_status) if (felic_stat & ECSR_LCHNG) { /* Link Changed */ if (mdp->cd->no_psr || mdp->no_ether_link) { - if (mdp->link == PHY_DOWN) - link_stat = 0; - else - link_stat = PHY_ST_LINK; + goto ignore_link; } else { link_stat = (sh_eth_read(ndev, PSR)); if (mdp->ether_link_active_low) @@ -1242,6 +1239,7 @@ static void sh_eth_error(struct net_device *ndev, int intr_status) } } +ignore_link: if (intr_status & EESR_TWB) { /* Write buck end. unused write back interrupt */ if (intr_status & EESR_TABT) /* Transmit Abort int */ @@ -1392,12 +1390,16 @@ static void sh_eth_adjust_link(struct net_device *ndev) (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR); new_state = 1; mdp->link = phydev->link; + if (mdp->cd->no_psr || mdp->no_ether_link) + sh_eth_rcv_snd_enable(ndev); } } else if (mdp->link) { new_state = 1; mdp->link = PHY_DOWN; mdp->speed = 0; mdp->duplex = -1; + if (mdp->cd->no_psr || mdp->no_ether_link) + sh_eth_rcv_snd_disable(ndev); } if (new_state && netif_msg_link(mdp)) -- cgit v1.2.1 From 3893b27345ac0ff13c1b9ec20ad50966b810997e Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sun, 31 Mar 2013 09:54:20 +0000 Subject: sh_eth: workaround for spurious ECI interrupt At least on Renesas R8A7778, EESR.ECI interrupt seems to fire regardless of its mask in EESIPR register. I can 100% reproduce it with the following scenario: target is booted with 'ip=on' option, and so IP-Config opens SoC Ether device but doesn't get a proper reply and then succeeds with on-board SMC chip; then I login and try to bring up the SoC Ether device with 'ifconfig', and I get an ECI interrupt once request_irq() is called by sh_eth_open() (while interrupt mask in EESIPR register is all 0), if that interrupt is accompanied by a pending EESR.FRC (frame receive completion) interrupt, I get kernel oops in sh_eth_rx() because sh_eth_ring_init() hasn't been called yet! The solution I worked out is the following: in sh_eth_interrupt(), mask the interrupt status from EESR register with the interrupt mask from EESIPR register in order not to handle the disabled interrupts -- but forcing EESIPR.M_ECI bit in this mask set because we always need to fully handle EESR.ECI interrupt in sh_eth_error() in order to quench it (as it doesn't get cleared by just writing 1 to the this bit as all the other interrupts). While at it, remove unneeded initializer for 'intr_status' variable and give it *unsigned long* type, matching the type of sh_eth_read()'s result; fix comment. Signed-off-by: Sergei Shtylyov Reviewed-by: Max Filippov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 1ca8b2b10adc..44f7904e5054 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1324,12 +1324,18 @@ static irqreturn_t sh_eth_interrupt(int irq, void *netdev) struct sh_eth_private *mdp = netdev_priv(ndev); struct sh_eth_cpu_data *cd = mdp->cd; irqreturn_t ret = IRQ_NONE; - u32 intr_status = 0; + unsigned long intr_status; spin_lock(&mdp->lock); - /* Get interrpt stat */ + /* Get interrupt status */ intr_status = sh_eth_read(ndev, EESR); + /* Mask it with the interrupt mask, forcing ECI interrupt to be always + * enabled since it's the one that comes thru regardless of the mask, + * and we need to fully handle it in sh_eth_error() in order to quench + * it as it doesn't get cleared by just writing 1 to the ECI bit... + */ + intr_status &= sh_eth_read(ndev, EESIPR) | DMAC_M_ECI; /* Clear interrupt */ if (intr_status & (EESR_FRC | EESR_RMAF | EESR_RRF | EESR_RTLF | EESR_RTSF | EESR_PRE | EESR_CERF | -- cgit v1.2.1 From 3340d2aae3433ad9147f6bf0adc452b324e31591 Mon Sep 17 00:00:00 2001 From: Sergei Shtylyov Date: Sun, 31 Mar 2013 10:11:04 +0000 Subject: sh_eth: make 'link' field of 'struct sh_eth_private' *int* The 'link' field of 'struct sh_eth_private' has type 'enum phy_state' while the 'link' field of 'struct phy_device' is merely *int* (having values 0 and 1) and the former field gets assigned from the latter. Make the field match, getting rid of incorrectly used PHY_DOWN value in assignments/comparisons. Signed-off-by: Sergei Shtylyov Signed-off-by: David S. Miller --- drivers/net/ethernet/renesas/sh_eth.c | 8 ++++---- drivers/net/ethernet/renesas/sh_eth.h | 2 +- 2 files changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index 44f7904e5054..6ed333fe5c04 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -1377,7 +1377,7 @@ static void sh_eth_adjust_link(struct net_device *ndev) struct phy_device *phydev = mdp->phydev; int new_state = 0; - if (phydev->link != PHY_DOWN) { + if (phydev->link) { if (phydev->duplex != mdp->duplex) { new_state = 1; mdp->duplex = phydev->duplex; @@ -1391,7 +1391,7 @@ static void sh_eth_adjust_link(struct net_device *ndev) if (mdp->cd->set_rate) mdp->cd->set_rate(ndev); } - if (mdp->link == PHY_DOWN) { + if (!mdp->link) { sh_eth_write(ndev, (sh_eth_read(ndev, ECMR) & ~ECMR_TXF), ECMR); new_state = 1; @@ -1401,7 +1401,7 @@ static void sh_eth_adjust_link(struct net_device *ndev) } } else if (mdp->link) { new_state = 1; - mdp->link = PHY_DOWN; + mdp->link = 0; mdp->speed = 0; mdp->duplex = -1; if (mdp->cd->no_psr || mdp->no_ether_link) @@ -1422,7 +1422,7 @@ static int sh_eth_phy_init(struct net_device *ndev) snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, mdp->mii_bus->id , mdp->phy_id); - mdp->link = PHY_DOWN; + mdp->link = 0; mdp->speed = 0; mdp->duplex = -1; diff --git a/drivers/net/ethernet/renesas/sh_eth.h b/drivers/net/ethernet/renesas/sh_eth.h index e6655678458e..828be4515008 100644 --- a/drivers/net/ethernet/renesas/sh_eth.h +++ b/drivers/net/ethernet/renesas/sh_eth.h @@ -723,7 +723,7 @@ struct sh_eth_private { u32 phy_id; /* PHY ID */ struct mii_bus *mii_bus; /* MDIO bus control */ struct phy_device *phydev; /* PHY device control */ - enum phy_state link; + int link; phy_interface_t phy_interface; int msg_enable; int speed; -- cgit v1.2.1 From 6741f40d198c6a5feb23653a1efd4ca47f93d83d Mon Sep 17 00:00:00 2001 From: Joseph CHANG Date: Thu, 28 Mar 2013 23:13:42 +0000 Subject: DM9000B: driver initialization upgrade Fix bug for DM9000 revision B which contain a DSP PHY DM9000B use DSP PHY instead previouse DM9000 revisions' analog PHY, So need extra change in initialization, For explicity PHY Reset and PHY init parameter, and first DM9000_NCR reset need NCR_MAC_LBK bit by dm9000_probe(). Following DM9000_NCR reset cause by dm9000_open() clear the NCR_MAC_LBK bit. Without this fix, Power-up FIFO pointers error happen around 2% rate among Davicom's customers' boards. With this fix, All above cases can be solved. Signed-off-by: Joseph CHANG Signed-off-by: David S. Miller --- drivers/net/ethernet/davicom/dm9000.c | 214 +++++++++++++++++----------------- drivers/net/ethernet/davicom/dm9000.h | 11 +- 2 files changed, 120 insertions(+), 105 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/davicom/dm9000.c b/drivers/net/ethernet/davicom/dm9000.c index 8cdf02503d13..9eada8e86078 100644 --- a/drivers/net/ethernet/davicom/dm9000.c +++ b/drivers/net/ethernet/davicom/dm9000.c @@ -257,6 +257,107 @@ static void dm9000_dumpblk_32bit(void __iomem *reg, int count) tmp = readl(reg); } +/* + * Sleep, either by using msleep() or if we are suspending, then + * use mdelay() to sleep. + */ +static void dm9000_msleep(board_info_t *db, unsigned int ms) +{ + if (db->in_suspend) + mdelay(ms); + else + msleep(ms); +} + +/* Read a word from phyxcer */ +static int +dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) +{ + board_info_t *db = netdev_priv(dev); + unsigned long flags; + unsigned int reg_save; + int ret; + + mutex_lock(&db->addr_lock); + + spin_lock_irqsave(&db->lock, flags); + + /* Save previous register address */ + reg_save = readb(db->io_addr); + + /* Fill the phyxcer register into REG_0C */ + iow(db, DM9000_EPAR, DM9000_PHY | reg); + + /* Issue phyxcer read command */ + iow(db, DM9000_EPCR, EPCR_ERPRR | EPCR_EPOS); + + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock, flags); + + dm9000_msleep(db, 1); /* Wait read complete */ + + spin_lock_irqsave(&db->lock, flags); + reg_save = readb(db->io_addr); + + iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ + + /* The read data keeps on REG_0D & REG_0E */ + ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); + + /* restore the previous address */ + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock, flags); + + mutex_unlock(&db->addr_lock); + + dm9000_dbg(db, 5, "phy_read[%02x] -> %04x\n", reg, ret); + return ret; +} + +/* Write a word to phyxcer */ +static void +dm9000_phy_write(struct net_device *dev, + int phyaddr_unused, int reg, int value) +{ + board_info_t *db = netdev_priv(dev); + unsigned long flags; + unsigned long reg_save; + + dm9000_dbg(db, 5, "phy_write[%02x] = %04x\n", reg, value); + mutex_lock(&db->addr_lock); + + spin_lock_irqsave(&db->lock, flags); + + /* Save previous register address */ + reg_save = readb(db->io_addr); + + /* Fill the phyxcer register into REG_0C */ + iow(db, DM9000_EPAR, DM9000_PHY | reg); + + /* Fill the written data into REG_0D & REG_0E */ + iow(db, DM9000_EPDRL, value); + iow(db, DM9000_EPDRH, value >> 8); + + /* Issue phyxcer write command */ + iow(db, DM9000_EPCR, EPCR_EPOS | EPCR_ERPRW); + + writeb(reg_save, db->io_addr); + spin_unlock_irqrestore(&db->lock, flags); + + dm9000_msleep(db, 1); /* Wait write complete */ + + spin_lock_irqsave(&db->lock, flags); + reg_save = readb(db->io_addr); + + iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ + + /* restore the previous address */ + writeb(reg_save, db->io_addr); + + spin_unlock_irqrestore(&db->lock, flags); + mutex_unlock(&db->addr_lock); +} + /* dm9000_set_io * * select the specified set of io routines to use with the @@ -795,6 +896,9 @@ dm9000_init_dm9000(struct net_device *dev) iow(db, DM9000_GPCR, GPCR_GEP_CNTL); /* Let GPIO0 output */ + dm9000_phy_write(dev, 0, MII_BMCR, BMCR_RESET); /* PHY RESET */ + dm9000_phy_write(dev, 0, MII_DM_DSPCR, DSPCR_INIT_PARAM); /* Init */ + ncr = (db->flags & DM9000_PLATF_EXT_PHY) ? NCR_EXT_PHY : 0; /* if wol is needed, then always set NCR_WAKEEN otherwise we end @@ -1201,109 +1305,6 @@ dm9000_open(struct net_device *dev) return 0; } -/* - * Sleep, either by using msleep() or if we are suspending, then - * use mdelay() to sleep. - */ -static void dm9000_msleep(board_info_t *db, unsigned int ms) -{ - if (db->in_suspend) - mdelay(ms); - else - msleep(ms); -} - -/* - * Read a word from phyxcer - */ -static int -dm9000_phy_read(struct net_device *dev, int phy_reg_unused, int reg) -{ - board_info_t *db = netdev_priv(dev); - unsigned long flags; - unsigned int reg_save; - int ret; - - mutex_lock(&db->addr_lock); - - spin_lock_irqsave(&db->lock,flags); - - /* Save previous register address */ - reg_save = readb(db->io_addr); - - /* Fill the phyxcer register into REG_0C */ - iow(db, DM9000_EPAR, DM9000_PHY | reg); - - iow(db, DM9000_EPCR, EPCR_ERPRR | EPCR_EPOS); /* Issue phyxcer read command */ - - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); - - dm9000_msleep(db, 1); /* Wait read complete */ - - spin_lock_irqsave(&db->lock,flags); - reg_save = readb(db->io_addr); - - iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer read command */ - - /* The read data keeps on REG_0D & REG_0E */ - ret = (ior(db, DM9000_EPDRH) << 8) | ior(db, DM9000_EPDRL); - - /* restore the previous address */ - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock,flags); - - mutex_unlock(&db->addr_lock); - - dm9000_dbg(db, 5, "phy_read[%02x] -> %04x\n", reg, ret); - return ret; -} - -/* - * Write a word to phyxcer - */ -static void -dm9000_phy_write(struct net_device *dev, - int phyaddr_unused, int reg, int value) -{ - board_info_t *db = netdev_priv(dev); - unsigned long flags; - unsigned long reg_save; - - dm9000_dbg(db, 5, "phy_write[%02x] = %04x\n", reg, value); - mutex_lock(&db->addr_lock); - - spin_lock_irqsave(&db->lock,flags); - - /* Save previous register address */ - reg_save = readb(db->io_addr); - - /* Fill the phyxcer register into REG_0C */ - iow(db, DM9000_EPAR, DM9000_PHY | reg); - - /* Fill the written data into REG_0D & REG_0E */ - iow(db, DM9000_EPDRL, value); - iow(db, DM9000_EPDRH, value >> 8); - - iow(db, DM9000_EPCR, EPCR_EPOS | EPCR_ERPRW); /* Issue phyxcer write command */ - - writeb(reg_save, db->io_addr); - spin_unlock_irqrestore(&db->lock, flags); - - dm9000_msleep(db, 1); /* Wait write complete */ - - spin_lock_irqsave(&db->lock,flags); - reg_save = readb(db->io_addr); - - iow(db, DM9000_EPCR, 0x0); /* Clear phyxcer write command */ - - /* restore the previous address */ - writeb(reg_save, db->io_addr); - - spin_unlock_irqrestore(&db->lock, flags); - mutex_unlock(&db->addr_lock); -} - static void dm9000_shutdown(struct net_device *dev) { @@ -1502,7 +1503,12 @@ dm9000_probe(struct platform_device *pdev) db->flags |= DM9000_PLATF_SIMPLE_PHY; #endif - dm9000_reset(db); + /* Fixing bug on dm9000_probe, takeover dm9000_reset(db), + * Need 'NCR_MAC_LBK' bit to indeed stable our DM9000 fifo + * while probe stage. + */ + + iow(db, DM9000_NCR, NCR_MAC_LBK | NCR_RST); /* try multiple times, DM9000 sometimes gets the read wrong */ for (i = 0; i < 8; i++) { diff --git a/drivers/net/ethernet/davicom/dm9000.h b/drivers/net/ethernet/davicom/dm9000.h index 55688bd1a3ef..9ce058adabab 100644 --- a/drivers/net/ethernet/davicom/dm9000.h +++ b/drivers/net/ethernet/davicom/dm9000.h @@ -69,7 +69,9 @@ #define NCR_WAKEEN (1<<6) #define NCR_FCOL (1<<4) #define NCR_FDX (1<<3) -#define NCR_LBK (3<<1) + +#define NCR_RESERVED (3<<1) +#define NCR_MAC_LBK (1<<1) #define NCR_RST (1<<0) #define NSR_SPEED (1<<7) @@ -167,5 +169,12 @@ #define ISR_LNKCHNG (1<<5) #define ISR_UNDERRUN (1<<4) +/* Davicom MII registers. + */ + +#define MII_DM_DSPCR 0x1b /* DSP Control Register */ + +#define DSPCR_INIT_PARAM 0xE100 /* DSP init parameter */ + #endif /* _DM9000X_H_ */ -- cgit v1.2.1 From 375981f2e14868be16cafbffd34a4f16a6ee01c6 Mon Sep 17 00:00:00 2001 From: Girish K S Date: Wed, 13 Mar 2013 12:13:30 +0530 Subject: spi/s3c64xx: modified error interrupt handling and init The status of the interrupt is available in the status register, so reading the clear pending register and writing back the same value will not actually clear the pending interrupts. This patch modifies the interrupt handler to read the status register and clear the corresponding pending bit in the clear pending register. Modified the hwInit function to clear all the pending interrupts. Signed-off-by: Girish K S Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-s3c64xx.c | 41 +++++++++++++++++++++++++---------------- 1 file changed, 25 insertions(+), 16 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index e862ab8853aa..4188b2faac5c 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -994,25 +994,30 @@ static irqreturn_t s3c64xx_spi_irq(int irq, void *data) { struct s3c64xx_spi_driver_data *sdd = data; struct spi_master *spi = sdd->master; - unsigned int val; + unsigned int val, clr = 0; - val = readl(sdd->regs + S3C64XX_SPI_PENDING_CLR); + val = readl(sdd->regs + S3C64XX_SPI_STATUS); - val &= S3C64XX_SPI_PND_RX_OVERRUN_CLR | - S3C64XX_SPI_PND_RX_UNDERRUN_CLR | - S3C64XX_SPI_PND_TX_OVERRUN_CLR | - S3C64XX_SPI_PND_TX_UNDERRUN_CLR; - - writel(val, sdd->regs + S3C64XX_SPI_PENDING_CLR); - - if (val & S3C64XX_SPI_PND_RX_OVERRUN_CLR) + if (val & S3C64XX_SPI_ST_RX_OVERRUN_ERR) { + clr = S3C64XX_SPI_PND_RX_OVERRUN_CLR; dev_err(&spi->dev, "RX overrun\n"); - if (val & S3C64XX_SPI_PND_RX_UNDERRUN_CLR) + } + if (val & S3C64XX_SPI_ST_RX_UNDERRUN_ERR) { + clr |= S3C64XX_SPI_PND_RX_UNDERRUN_CLR; dev_err(&spi->dev, "RX underrun\n"); - if (val & S3C64XX_SPI_PND_TX_OVERRUN_CLR) + } + if (val & S3C64XX_SPI_ST_TX_OVERRUN_ERR) { + clr |= S3C64XX_SPI_PND_TX_OVERRUN_CLR; dev_err(&spi->dev, "TX overrun\n"); - if (val & S3C64XX_SPI_PND_TX_UNDERRUN_CLR) + } + if (val & S3C64XX_SPI_ST_TX_UNDERRUN_ERR) { + clr |= S3C64XX_SPI_PND_TX_UNDERRUN_CLR; dev_err(&spi->dev, "TX underrun\n"); + } + + /* Clear the pending irq by setting and then clearing it */ + writel(clr, sdd->regs + S3C64XX_SPI_PENDING_CLR); + writel(0, sdd->regs + S3C64XX_SPI_PENDING_CLR); return IRQ_HANDLED; } @@ -1036,9 +1041,13 @@ static void s3c64xx_spi_hwinit(struct s3c64xx_spi_driver_data *sdd, int channel) writel(0, regs + S3C64XX_SPI_MODE_CFG); writel(0, regs + S3C64XX_SPI_PACKET_CNT); - /* Clear any irq pending bits */ - writel(readl(regs + S3C64XX_SPI_PENDING_CLR), - regs + S3C64XX_SPI_PENDING_CLR); + /* Clear any irq pending bits, should set and clear the bits */ + val = S3C64XX_SPI_PND_RX_OVERRUN_CLR | + S3C64XX_SPI_PND_RX_UNDERRUN_CLR | + S3C64XX_SPI_PND_TX_OVERRUN_CLR | + S3C64XX_SPI_PND_TX_UNDERRUN_CLR; + writel(val, regs + S3C64XX_SPI_PENDING_CLR); + writel(0, regs + S3C64XX_SPI_PENDING_CLR); writel(0, regs + S3C64XX_SPI_SWAP_CFG); -- cgit v1.2.1 From b0b36b861e434ee1c1a64cb39259e262f79af62e Mon Sep 17 00:00:00 2001 From: Bryan Freed Date: Wed, 13 Mar 2013 11:17:40 -0700 Subject: spi: Unlock a spinlock before calling into the controller driver. spi_pump_messages() calls into a controller driver with unprepare_transfer_hardware() which is documented as "This may sleep". As in the prepare_transfer_hardware() call below, we should release the queue_lock spinlock before making the call. Rework the logic a bit to hold queue_lock to protect the 'busy' flag, then release it to call unprepare_transfer_hardware(). Signed-off-by: Bryan Freed Reviewed-by: Doug Anderson Signed-off-by: Doug Anderson Acked-by: Linus Walleij Signed-off-by: Mark Brown --- drivers/spi/spi.c | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index f996c600eb8c..5b96250b0628 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -543,17 +543,16 @@ static void spi_pump_messages(struct kthread_work *work) /* Lock queue and check for queue work */ spin_lock_irqsave(&master->queue_lock, flags); if (list_empty(&master->queue) || !master->running) { - if (master->busy && master->unprepare_transfer_hardware) { - ret = master->unprepare_transfer_hardware(master); - if (ret) { - spin_unlock_irqrestore(&master->queue_lock, flags); - dev_err(&master->dev, - "failed to unprepare transfer hardware\n"); - return; - } + if (!master->busy) { + spin_unlock_irqrestore(&master->queue_lock, flags); + return; } master->busy = false; spin_unlock_irqrestore(&master->queue_lock, flags); + if (master->unprepare_transfer_hardware && + master->unprepare_transfer_hardware(master)) + dev_err(&master->dev, + "failed to unprepare transfer hardware\n"); return; } -- cgit v1.2.1 From 1ad849aee5f53353ed88d9cd3d68a51b03a7d44f Mon Sep 17 00:00:00 2001 From: Anatolij Gustschin Date: Wed, 13 Mar 2013 14:57:43 +0100 Subject: spi/mpc512x-psc: optionally keep PSC SS asserted across xfer segmensts Some SPI slave devices require asserted chip select signal across multiple transfer segments of an SPI message. Currently the driver always de-asserts the internal SS signal for every single transfer segment of the message and ignores the 'cs_change' flag of the transfer description. Disable the internal chip select (SS) only if this is needed and indicated by the 'cs_change' flag. Without this change, each partial transfer of a surrounding multi-part SPI transaction might erroneously change the SS signal, which might prevent slaves from answering the request that was sent in a previous transfer segment because the transaction could be considered aborted (SS was de-asserted before reading the response). Reported-by: Gerhard Sittig Signed-off-by: Anatolij Gustschin Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-mpc512x-psc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c index 89480b281d74..3e490ee7f275 100644 --- a/drivers/spi/spi-mpc512x-psc.c +++ b/drivers/spi/spi-mpc512x-psc.c @@ -164,7 +164,7 @@ static int mpc512x_psc_spi_transfer_rxtx(struct spi_device *spi, for (i = count; i > 0; i--) { data = tx_buf ? *tx_buf++ : 0; - if (len == EOFBYTE) + if (len == EOFBYTE && t->cs_change) setbits32(&fifo->txcmd, MPC512x_PSC_FIFO_EOF); out_8(&fifo->txdata_8, data); len--; -- cgit v1.2.1 From 2cfda637e29ce9e3df31b59f64516b2e571cc985 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Mon, 1 Apr 2013 11:48:59 -0600 Subject: EISA/PCI: Fix bus res reference Matthew found that 3.8.3 is having problems with an old (ancient) PCI-to-EISA bridge, the Intel 82375. It worked with the 3.2 kernel. He identified the 82375, but doesn't assign the struct resource *res pointer inside the struct eisa_root_device, and panics. pci_eisa_init() was using bus->resource[] directly instead of pci_bus_resource_n(). The bus->resource[] array is a PCI-internal implementation detail, and after commit 45ca9e97 (PCI: add helpers for building PCI bus resource lists) and commit 0efd5aab (PCI: add struct pci_host_bridge_window with CPU/bus address offset), bus->resource[] is not used for PCI root buses any more. The 82375 is a subtractive-decode PCI device, so handle it the same way we handle PCI-PCI bridges in subtractive-decode mode in pci_read_bridge_bases(). [bhelgaas: changelog] Reported-by: Matthew Whitehead Tested-by: Matthew Whitehead Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org # v3.3+ --- drivers/eisa/pci_eisa.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/eisa/pci_eisa.c b/drivers/eisa/pci_eisa.c index cdae207028a7..ef5c3ec87432 100644 --- a/drivers/eisa/pci_eisa.c +++ b/drivers/eisa/pci_eisa.c @@ -22,7 +22,8 @@ static struct eisa_root_device pci_eisa_root; static int __init pci_eisa_init(struct pci_dev *pdev, const struct pci_device_id *ent) { - int rc; + int rc, i; + struct resource *res, *bus_res = NULL; if ((rc = pci_enable_device (pdev))) { printk (KERN_ERR "pci_eisa : Could not enable device %s\n", @@ -30,9 +31,30 @@ static int __init pci_eisa_init(struct pci_dev *pdev, return rc; } + /* + * The Intel 82375 PCI-EISA bridge is a subtractive-decode PCI + * device, so the resources available on EISA are the same as those + * available on the 82375 bus. This works the same as a PCI-PCI + * bridge in subtractive-decode mode (see pci_read_bridge_bases()). + * We assume other PCI-EISA bridges are similar. + * + * eisa_root_register() can only deal with a single io port resource, + * so we use the first valid io port resource. + */ + pci_bus_for_each_resource(pdev->bus, res, i) + if (res && (res->flags & IORESOURCE_IO)) { + bus_res = res; + break; + } + + if (!bus_res) { + dev_err(&pdev->dev, "No resources available\n"); + return -1; + } + pci_eisa_root.dev = &pdev->dev; - pci_eisa_root.res = pdev->bus->resource[0]; - pci_eisa_root.bus_base_addr = pdev->bus->resource[0]->start; + pci_eisa_root.res = bus_res; + pci_eisa_root.bus_base_addr = bus_res->start; pci_eisa_root.slots = EISA_MAX_SLOTS; pci_eisa_root.dma_mask = pdev->dma_mask; dev_set_drvdata(pci_eisa_root.dev, &pci_eisa_root); -- cgit v1.2.1 From c5fb301ae83bec6892e54984e6ec765c47df8e10 Mon Sep 17 00:00:00 2001 From: Yinghai Lu Date: Wed, 27 Mar 2013 21:28:05 -0700 Subject: EISA/PCI: Init EISA early, before PNP Matthew reported kernels fail the pci_eisa probe and are later successful with the virtual_eisa_root_init force probe without slot0. The reason for that is: PNP probing is before pci_eisa_init gets called as pci_eisa_init is called via pci_driver. pnp 00:0f has 0xc80 - 0xc84 reserved. [ 9.700409] pnp 00:0f: [io 0x0c80-0x0c84] so eisa_probe will fail from pci_eisa_init ==>eisa_root_register ==>eisa_probe path. as force_probe is not set in pci_eisa_root, it will bail early when slot0 is not probed and initialized. Try to use subsys_initcall_sync instead, and will keep following sequence: pci_subsys_init pci_eisa_init_early pnpacpi_init/isapnp_init After this patch EISA can be initialized properly, and PNP overlapping resource will not be reserved. [ 10.104434] system 00:0f: [io 0x0c80-0x0c84] could not be reserved Reported-by: Matthew Whitehead Tested-by: Matthew Whitehead Signed-off-by: Yinghai Lu Signed-off-by: Bjorn Helgaas Cc: stable@vger.kernel.org --- drivers/eisa/pci_eisa.c | 39 +++++++++++++++++++++------------------ 1 file changed, 21 insertions(+), 18 deletions(-) (limited to 'drivers') diff --git a/drivers/eisa/pci_eisa.c b/drivers/eisa/pci_eisa.c index ef5c3ec87432..6c3fca97d346 100644 --- a/drivers/eisa/pci_eisa.c +++ b/drivers/eisa/pci_eisa.c @@ -19,8 +19,7 @@ /* There is only *one* pci_eisa device per machine, right ? */ static struct eisa_root_device pci_eisa_root; -static int __init pci_eisa_init(struct pci_dev *pdev, - const struct pci_device_id *ent) +static int __init pci_eisa_init(struct pci_dev *pdev) { int rc, i; struct resource *res, *bus_res = NULL; @@ -67,22 +66,26 @@ static int __init pci_eisa_init(struct pci_dev *pdev, return 0; } -static struct pci_device_id pci_eisa_pci_tbl[] = { - { PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, - PCI_CLASS_BRIDGE_EISA << 8, 0xffff00, 0 }, - { 0, } -}; +/* + * We have to call pci_eisa_init_early() before pnpacpi_init()/isapnp_init(). + * Otherwise pnp resource will get enabled early and could prevent eisa + * to be initialized. + * Also need to make sure pci_eisa_init_early() is called after + * x86/pci_subsys_init(). + * So need to use subsys_initcall_sync with it. + */ +static int __init pci_eisa_init_early(void) +{ + struct pci_dev *dev = NULL; + int ret; -static struct pci_driver __refdata pci_eisa_driver = { - .name = "pci_eisa", - .id_table = pci_eisa_pci_tbl, - .probe = pci_eisa_init, -}; + for_each_pci_dev(dev) + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_EISA) { + ret = pci_eisa_init(dev); + if (ret) + return ret; + } -static int __init pci_eisa_init_module (void) -{ - return pci_register_driver (&pci_eisa_driver); + return 0; } - -device_initcall(pci_eisa_init_module); -MODULE_DEVICE_TABLE(pci, pci_eisa_pci_tbl); +subsys_initcall_sync(pci_eisa_init_early); -- cgit v1.2.1 From 0f1bc12e9eddaba2baf52d020d37670dbabe3702 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 14 Mar 2013 16:27:05 +0100 Subject: clk: tegra: Allow PLLE training to succeed Under some circumstances the PLLE needs to be retrained, in which case access to the PMC registers is required. Fix this by passing a pointer to the PMC registers instead of NULL when registering the PLLE clock. Signed-off-by: Thierry Reding Acked-By: Peter De Schrijver Signed-off-by: Mike Turquette --- drivers/clk/tegra/clk-tegra20.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/clk/tegra/clk-tegra20.c b/drivers/clk/tegra/clk-tegra20.c index 1e2de7305362..f873dcefe0de 100644 --- a/drivers/clk/tegra/clk-tegra20.c +++ b/drivers/clk/tegra/clk-tegra20.c @@ -703,7 +703,7 @@ static void tegra20_pll_init(void) clks[pll_a_out0] = clk; /* PLLE */ - clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, NULL, + clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base, 0, 100000000, &pll_e_params, 0, pll_e_freq_table, NULL); clk_register_clkdev(clk, "pll_e", NULL); -- cgit v1.2.1 From 901ceba4e81e9dd6b4a3c4c37ee22000a6c5c65f Mon Sep 17 00:00:00 2001 From: Stone Piao Date: Fri, 29 Mar 2013 19:21:21 -0700 Subject: mwifiex: limit channel number not to overflow memory Limit the channel number in scan request, or the driver scan config structure memory will be overflowed. Cc: # 3.5+ Signed-off-by: Stone Piao Signed-off-by: Bing Zhao Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/cfg80211.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/wireless/mwifiex/cfg80211.c b/drivers/net/wireless/mwifiex/cfg80211.c index a44023a7bd57..8aaf56ade4d9 100644 --- a/drivers/net/wireless/mwifiex/cfg80211.c +++ b/drivers/net/wireless/mwifiex/cfg80211.c @@ -1892,7 +1892,8 @@ mwifiex_cfg80211_scan(struct wiphy *wiphy, } } - for (i = 0; i < request->n_channels; i++) { + for (i = 0; i < min_t(u32, request->n_channels, + MWIFIEX_USER_SCAN_CHAN_MAX); i++) { chan = request->channels[i]; priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value; priv->user_scan_cfg->chan_list[i].radio_type = chan->band; -- cgit v1.2.1 From 121cdf08cc854bda4892d2c755e32ef424772ac2 Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 26 Mar 2013 17:25:55 -0400 Subject: nouveau: Attempt to use platform-provided ROM image Some platforms only provide their PCI ROM via a platform-specific interface. Fall back to attempting that if all other sources fail. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas --- drivers/gpu/drm/nouveau/core/subdev/bios/base.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/nouveau/core/subdev/bios/base.c b/drivers/gpu/drm/nouveau/core/subdev/bios/base.c index e816f06637a7..0e2c1a4f1659 100644 --- a/drivers/gpu/drm/nouveau/core/subdev/bios/base.c +++ b/drivers/gpu/drm/nouveau/core/subdev/bios/base.c @@ -248,6 +248,22 @@ nouveau_bios_shadow_pci(struct nouveau_bios *bios) } } +static void +nouveau_bios_shadow_platform(struct nouveau_bios *bios) +{ + struct pci_dev *pdev = nv_device(bios)->pdev; + size_t size; + + void __iomem *rom = pci_platform_rom(pdev, &size); + if (rom && size) { + bios->data = kmalloc(size, GFP_KERNEL); + if (bios->data) { + memcpy_fromio(bios->data, rom, size); + bios->size = size; + } + } +} + static int nouveau_bios_score(struct nouveau_bios *bios, const bool writeable) { @@ -288,6 +304,7 @@ nouveau_bios_shadow(struct nouveau_bios *bios) { "PROM", nouveau_bios_shadow_prom, false, 0, 0, NULL }, { "ACPI", nouveau_bios_shadow_acpi, true, 0, 0, NULL }, { "PCIROM", nouveau_bios_shadow_pci, true, 0, 0, NULL }, + { "PLATFORM", nouveau_bios_shadow_platform, true, 0, 0, NULL }, {} }; struct methods *mthd, *best; -- cgit v1.2.1 From 06a08570085b3b20c45f45dc66dc46851ecbcb5b Mon Sep 17 00:00:00 2001 From: Matthew Garrett Date: Tue, 26 Mar 2013 17:25:56 -0400 Subject: radeon: Attempt to use platform-provided ROM image Some platforms only provide their PCI ROM via a platform-specific interface. Fall back to attempting that if all other sources fail. Signed-off-by: Matthew Garrett Signed-off-by: Bjorn Helgaas --- drivers/gpu/drm/radeon/radeon_bios.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'drivers') diff --git a/drivers/gpu/drm/radeon/radeon_bios.c b/drivers/gpu/drm/radeon/radeon_bios.c index b8015913d382..fa3c56fba294 100644 --- a/drivers/gpu/drm/radeon/radeon_bios.c +++ b/drivers/gpu/drm/radeon/radeon_bios.c @@ -99,6 +99,29 @@ static bool radeon_read_bios(struct radeon_device *rdev) return true; } +static bool radeon_read_platform_bios(struct radeon_device *rdev) +{ + uint8_t __iomem *bios; + size_t size; + + rdev->bios = NULL; + + bios = pci_platform_rom(rdev->pdev, &size); + if (!bios) { + return false; + } + + if (size == 0 || bios[0] != 0x55 || bios[1] != 0xaa) { + return false; + } + rdev->bios = kmemdup(bios, size, GFP_KERNEL); + if (rdev->bios == NULL) { + return false; + } + + return true; +} + #ifdef CONFIG_ACPI /* ATRM is used to get the BIOS on the discrete cards in * dual-gpu systems. @@ -620,6 +643,9 @@ bool radeon_get_bios(struct radeon_device *rdev) if (r == false) { r = radeon_read_disabled_bios(rdev); } + if (r == false) { + r = radeon_read_platform_bios(rdev); + } if (r == false || rdev->bios == NULL) { DRM_ERROR("Unable to locate a BIOS ROM\n"); rdev->bios = NULL; -- cgit v1.2.1 From c1681bf8a7b1b98edee8b862a42c19c4e53205fd Mon Sep 17 00:00:00 2001 From: Anatol Pomozov Date: Mon, 1 Apr 2013 09:47:56 -0700 Subject: loop: prevent bdev freeing while device in use struct block_device lifecycle is defined by its inode (see fs/block_dev.c) - block_device allocated first time we access /dev/loopXX and deallocated on bdev_destroy_inode. When we create the device "losetup /dev/loopXX afile" we want that block_device stay alive until we destroy the loop device with "losetup -d". But because we do not hold /dev/loopXX inode its counter goes 0, and inode/bdev can be destroyed at any moment. Usually it happens at memory pressure or when user drops inode cache (like in the test below). When later in loop_clr_fd() we want to use bdev we have use-after-free error with following stack: BUG: unable to handle kernel NULL pointer dereference at 0000000000000280 bd_set_size+0x10/0xa0 loop_clr_fd+0x1f8/0x420 [loop] lo_ioctl+0x200/0x7e0 [loop] lo_compat_ioctl+0x47/0xe0 [loop] compat_blkdev_ioctl+0x341/0x1290 do_filp_open+0x42/0xa0 compat_sys_ioctl+0xc1/0xf20 do_sys_open+0x16e/0x1d0 sysenter_dispatch+0x7/0x1a To prevent use-after-free we need to grab the device in loop_set_fd() and put it later in loop_clr_fd(). The issue is reprodusible on current Linus head and v3.3. Here is the test: dd if=/dev/zero of=loop.file bs=1M count=1 while [ true ]; do losetup /dev/loop0 loop.file echo 2 > /proc/sys/vm/drop_caches losetup -d /dev/loop0 done [ Doing bdgrab/bput in loop_set_fd/loop_clr_fd is safe, because every time we call loop_set_fd() we check that loop_device->lo_state is Lo_unbound and set it to Lo_bound If somebody will try to set_fd again it will get EBUSY. And if we try to loop_clr_fd() on unbound loop device we'll get ENXIO. loop_set_fd/loop_clr_fd (and any other loop ioctl) is called under loop_device->lo_ctl_mutex. ] Signed-off-by: Anatol Pomozov Cc: Al Viro Signed-off-by: Linus Torvalds --- drivers/block/loop.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/block/loop.c b/drivers/block/loop.c index fe5f6403417f..2c127f9c3f3b 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -922,6 +922,11 @@ static int loop_set_fd(struct loop_device *lo, fmode_t mode, lo->lo_flags |= LO_FLAGS_PARTSCAN; if (lo->lo_flags & LO_FLAGS_PARTSCAN) ioctl_by_bdev(bdev, BLKRRPART, 0); + + /* Grab the block_device to prevent its destruction after we + * put /dev/loopXX inode. Later in loop_clr_fd() we bdput(bdev). + */ + bdgrab(bdev); return 0; out_clr: @@ -1031,8 +1036,10 @@ static int loop_clr_fd(struct loop_device *lo) memset(lo->lo_encrypt_key, 0, LO_KEY_SIZE); memset(lo->lo_crypt_name, 0, LO_NAME_SIZE); memset(lo->lo_file_name, 0, LO_NAME_SIZE); - if (bdev) + if (bdev) { + bdput(bdev); invalidate_bdev(bdev); + } set_capacity(lo->lo_disk, 0); loop_sysfs_exit(lo); if (bdev) { -- cgit v1.2.1 From da259465d7526804b21d274281fb4d60b4216c82 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 2 Apr 2013 01:25:09 +0200 Subject: USB / PM: Don't try to hide PM QoS flags from usb_port_device_release() Remove the call to dev_pm_qos_hide_flags(), added by commit 6e30d7cb "usb: Add driver/usb/core/(port.c,hub.h) files", from usb_port_device_release(), because (1) it is completely unnecessary (the flags have been removed already by the PM core during the unregistration of the device object) and (2) it triggers a NULL pointer dereference in sysfs_find_dirent() (dev->kobj.sd is NULL at this point). Signed-off-by: Rafael J. Wysocki Acked-by: Greg Kroah-Hartman --- drivers/usb/core/port.c | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers') diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index 797f9d514732..65d4e55552c6 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -67,7 +67,6 @@ static void usb_port_device_release(struct device *dev) { struct usb_port *port_dev = to_usb_port(dev); - dev_pm_qos_hide_flags(dev); kfree(port_dev); } -- cgit v1.2.1 From 0f703069296664eb7c649c837cc8bb936c3ef07f Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 2 Apr 2013 01:25:24 +0200 Subject: PM / QoS: Avoid possible deadlock related to sysfs access Commit b81ea1b (PM / QoS: Fix concurrency issues and memory leaks in device PM QoS) put calls to pm_qos_sysfs_add_latency(), pm_qos_sysfs_add_flags(), pm_qos_sysfs_remove_latency(), and pm_qos_sysfs_remove_flags() under dev_pm_qos_mtx, which was a mistake, because it may lead to deadlocks in some situations. For example, if pm_qos_remote_wakeup_store() is run in parallel with dev_pm_qos_constraints_destroy(), they may deadlock in the following way: ====================================================== [ INFO: possible circular locking dependency detected ] 3.9.0-rc4-next-20130328-sasha-00014-g91a3267 #319 Tainted: G W ------------------------------------------------------- trinity-child6/12371 is trying to acquire lock: (s_active#54){++++.+}, at: [] sysfs_addrm_finish+0x31/0x60 but task is already holding lock: (dev_pm_qos_mtx){+.+.+.}, at: [] dev_pm_qos_constraints_destroy+0x23/0x250 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #1 (dev_pm_qos_mtx){+.+.+.}: [] lock_acquire+0x1aa/0x240 [] __mutex_lock_common+0x59/0x5e0 [] mutex_lock_nested+0x3f/0x50 [] dev_pm_qos_update_flags+0x3f/0xc0 [] pm_qos_remote_wakeup_store+0x3f/0x70 [] dev_attr_store+0x13/0x20 [] sysfs_write_file+0xfa/0x150 [] __kernel_write+0x81/0x150 [] write_pipe_buf+0x4d/0x80 [] splice_from_pipe_feed+0x7c/0x120 [] __splice_from_pipe+0x45/0x80 [] splice_from_pipe+0x4c/0x70 [] default_file_splice_write+0x18/0x30 [] do_splice_from+0x83/0xb0 [] direct_splice_actor+0x1e/0x20 [] splice_direct_to_actor+0xe7/0x200 [] do_splice_direct+0x4c/0x70 [] do_sendfile+0x169/0x300 [] SyS_sendfile64+0x64/0xb0 [] tracesys+0xe1/0xe6 -> #0 (s_active#54){++++.+}: [] __lock_acquire+0x15bf/0x1e50 [] lock_acquire+0x1aa/0x240 [] sysfs_deactivate+0x122/0x1a0 [] sysfs_addrm_finish+0x31/0x60 [] sysfs_hash_and_remove+0x7f/0xb0 [] sysfs_unmerge_group+0x51/0x70 [] pm_qos_sysfs_remove_flags+0x14/0x20 [] __dev_pm_qos_hide_flags+0x30/0x70 [] dev_pm_qos_constraints_destroy+0x35/0x250 [] dpm_sysfs_remove+0x11/0x50 [] device_del+0x3f/0x1b0 [] device_unregister+0x48/0x60 [] usb_hub_remove_port_device+0x1c/0x20 [] hub_disconnect+0xdd/0x160 [] usb_unbind_interface+0x67/0x170 [] __device_release_driver+0x87/0xe0 [] device_release_driver+0x29/0x40 [] bus_remove_device+0x148/0x160 [] device_del+0x14f/0x1b0 [] usb_disable_device+0xf9/0x280 [] usb_set_configuration+0x268/0x840 [] usb_remove_store+0x4c/0x80 [] dev_attr_store+0x13/0x20 [] sysfs_write_file+0xfa/0x150 [] do_loop_readv_writev+0x4d/0x90 [] do_readv_writev+0xf9/0x1e0 [] vfs_writev+0x3a/0x60 [] SyS_writev+0x50/0xd0 [] tracesys+0xe1/0xe6 other info that might help us debug this: Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(dev_pm_qos_mtx); lock(s_active#54); lock(dev_pm_qos_mtx); lock(s_active#54); *** DEADLOCK *** To avoid that, remove the calls to functions mentioned above from under dev_pm_qos_mtx and introduce a separate lock to prevent races between functions that add or remove device PM QoS sysfs attributes from happening. Reported-by: Sasha Levin Signed-off-by: Rafael J. Wysocki --- drivers/base/power/qos.c | 60 +++++++++++++++++++++++++++++++++++++----------- 1 file changed, 47 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/base/power/qos.c b/drivers/base/power/qos.c index 5f74587ef258..71671c42ef45 100644 --- a/drivers/base/power/qos.c +++ b/drivers/base/power/qos.c @@ -46,6 +46,7 @@ #include "power.h" static DEFINE_MUTEX(dev_pm_qos_mtx); +static DEFINE_MUTEX(dev_pm_qos_sysfs_mtx); static BLOCKING_NOTIFIER_HEAD(dev_pm_notifiers); @@ -216,12 +217,17 @@ void dev_pm_qos_constraints_destroy(struct device *dev) struct pm_qos_constraints *c; struct pm_qos_flags *f; - mutex_lock(&dev_pm_qos_mtx); + mutex_lock(&dev_pm_qos_sysfs_mtx); /* * If the device's PM QoS resume latency limit or PM QoS flags have been * exposed to user space, they have to be hidden at this point. */ + pm_qos_sysfs_remove_latency(dev); + pm_qos_sysfs_remove_flags(dev); + + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_hide_latency_limit(dev); __dev_pm_qos_hide_flags(dev); @@ -254,6 +260,8 @@ void dev_pm_qos_constraints_destroy(struct device *dev) out: mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); } /** @@ -558,6 +566,14 @@ static void __dev_pm_qos_drop_user_request(struct device *dev, kfree(req); } +static void dev_pm_qos_drop_user_request(struct device *dev, + enum dev_pm_qos_req_type type) +{ + mutex_lock(&dev_pm_qos_mtx); + __dev_pm_qos_drop_user_request(dev, type); + mutex_unlock(&dev_pm_qos_mtx); +} + /** * dev_pm_qos_expose_latency_limit - Expose PM QoS latency limit to user space. * @dev: Device whose PM QoS latency limit is to be exposed to user space. @@ -581,6 +597,8 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) return ret; } + mutex_lock(&dev_pm_qos_sysfs_mtx); + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR_OR_NULL(dev->power.qos)) @@ -591,26 +609,27 @@ int dev_pm_qos_expose_latency_limit(struct device *dev, s32 value) if (ret < 0) { __dev_pm_qos_remove_request(req); kfree(req); + mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->latency_req = req; + + mutex_unlock(&dev_pm_qos_mtx); + ret = pm_qos_sysfs_add_latency(dev); if (ret) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); out: - mutex_unlock(&dev_pm_qos_mtx); + mutex_unlock(&dev_pm_qos_sysfs_mtx); return ret; } EXPORT_SYMBOL_GPL(dev_pm_qos_expose_latency_limit); static void __dev_pm_qos_hide_latency_limit(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) { - pm_qos_sysfs_remove_latency(dev); + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->latency_req) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_LATENCY); - } } /** @@ -619,9 +638,15 @@ static void __dev_pm_qos_hide_latency_limit(struct device *dev) */ void dev_pm_qos_hide_latency_limit(struct device *dev) { + mutex_lock(&dev_pm_qos_sysfs_mtx); + + pm_qos_sysfs_remove_latency(dev); + mutex_lock(&dev_pm_qos_mtx); __dev_pm_qos_hide_latency_limit(dev); mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_latency_limit); @@ -649,6 +674,8 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) } pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_sysfs_mtx); + mutex_lock(&dev_pm_qos_mtx); if (IS_ERR_OR_NULL(dev->power.qos)) @@ -659,16 +686,19 @@ int dev_pm_qos_expose_flags(struct device *dev, s32 val) if (ret < 0) { __dev_pm_qos_remove_request(req); kfree(req); + mutex_unlock(&dev_pm_qos_mtx); goto out; } - dev->power.qos->flags_req = req; + + mutex_unlock(&dev_pm_qos_mtx); + ret = pm_qos_sysfs_add_flags(dev); if (ret) - __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); + dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); out: - mutex_unlock(&dev_pm_qos_mtx); + mutex_unlock(&dev_pm_qos_sysfs_mtx); pm_runtime_put(dev); return ret; } @@ -676,10 +706,8 @@ EXPORT_SYMBOL_GPL(dev_pm_qos_expose_flags); static void __dev_pm_qos_hide_flags(struct device *dev) { - if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) { - pm_qos_sysfs_remove_flags(dev); + if (!IS_ERR_OR_NULL(dev->power.qos) && dev->power.qos->flags_req) __dev_pm_qos_drop_user_request(dev, DEV_PM_QOS_FLAGS); - } } /** @@ -689,9 +717,15 @@ static void __dev_pm_qos_hide_flags(struct device *dev) void dev_pm_qos_hide_flags(struct device *dev) { pm_runtime_get_sync(dev); + mutex_lock(&dev_pm_qos_sysfs_mtx); + + pm_qos_sysfs_remove_flags(dev); + mutex_lock(&dev_pm_qos_mtx); __dev_pm_qos_hide_flags(dev); mutex_unlock(&dev_pm_qos_mtx); + + mutex_unlock(&dev_pm_qos_sysfs_mtx); pm_runtime_put(dev); } EXPORT_SYMBOL_GPL(dev_pm_qos_hide_flags); -- cgit v1.2.1 From f5c3ef21db149ba573a3f079df287f3d8b05ee13 Mon Sep 17 00:00:00 2001 From: Paolo Pisati Date: Thu, 28 Mar 2013 09:24:29 +0000 Subject: cpufreq: check OF node /cpus presence before dereferencing it Check for the presence of the '/cpus' OF node before dereferencing it blindly: [ 4.181793] Unable to handle kernel NULL pointer dereference at virtual address 0000001c [ 4.181793] pgd = c0004000 [ 4.181823] [0000001c] *pgd=00000000 [ 4.181823] Internal error: Oops: 5 [#1] SMP ARM [ 4.181823] Modules linked in: [ 4.181823] CPU: 1 Tainted: G W (3.8.0-15-generic #25~hbankD) [ 4.181854] PC is at of_get_next_child+0x64/0x70 [ 4.181854] LR is at of_get_next_child+0x24/0x70 [ 4.181854] pc : [] lr : [] psr: 60000113 [ 4.181854] sp : ed891ec0 ip : ed891ec0 fp : ed891ed4 [ 4.181884] r10: c04dafd0 r9 : c098690c r8 : c0936208 [ 4.181884] r7 : ed890000 r6 : c0a63d00 r5 : 00000000 r4 : 00000000 [ 4.181884] r3 : 00000000 r2 : 00000000 r1 : 00000000 r0 : c0b2acc8 [ 4.181884] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 4.181884] Control: 10c5387d Table: adcb804a DAC: 00000015 [ 4.181915] Process swapper/0 (pid: 1, stack limit = 0xed890238) [ 4.181915] Stack: (0xed891ec0 to 0xed892000) [ 4.181915] 1ec0: c09b7b70 00000007 ed891efc ed891ed8 c04daff4 c04fd9c0 00000000 c09b7b70 [ 4.181915] 1ee0: 00000007 c0a63d00 ed890000 c0936208 ed891f54 ed891f00 c00088e0 c04dafdc [ 4.181945] 1f00: ed891f54 ed891f10 c006e940 00000000 00000000 00000007 00000007 c08a4914 [ 4.181945] 1f20: 00000000 c07dbd30 c0a63d00 c09b7b70 00000007 c0a63d00 000000bc c0936208 [ 4.181945] 1f40: c098690c c0986914 ed891f94 ed891f58 c0936a40 c00087bc 00000007 00000007 [ 4.181976] 1f60: c0936208 be8bda20 b6eea010 c0a63d00 c064547c 00000000 00000000 00000000 [ 4.181976] 1f80: 00000000 00000000 ed891fac ed891f98 c0645498 c09368c8 00000000 00000000 [ 4.181976] 1fa0: 00000000 ed891fb0 c0014658 c0645488 00000000 00000000 00000000 00000000 [ 4.182006] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 4.182006] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000 [ 4.182037] [] (of_get_next_child+0x64/0x70) from [] (cpu0_cpufreq_driver_init+0x24/0x284) [ 4.182067] [] (cpu0_cpufreq_driver_init+0x24/0x284) from [] (do_one_initcall+0x130/0x1b0) [ 4.182067] [] (do_one_initcall+0x130/0x1b0) from [] (kernel_init_freeable+0x184/0x24c) [ 4.182098] [] (kernel_init_freeable+0x184/0x24c) from [] (kernel_init+0x1c/0xf4) [ 4.182128] [] (kernel_init+0x1c/0xf4) from [] (ret_from_fork+0x14/0x20) [ 4.182128] Code: f57ff04f e320f004 e89da830 e89da830 (e595001c) [ 4.182128] ---[ end trace 634903a22e8609cb ]--- [ 4.182189] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b [ 4.182189] [ 4.642395] CPU0: stopping [rjw: Changelog] Signed-off-by: Paolo Pisati Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq-cpu0.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c index 4e5b7fb8927c..37d23a0f8c56 100644 --- a/drivers/cpufreq/cpufreq-cpu0.c +++ b/drivers/cpufreq/cpufreq-cpu0.c @@ -178,10 +178,16 @@ static struct cpufreq_driver cpu0_cpufreq_driver = { static int cpu0_cpufreq_probe(struct platform_device *pdev) { - struct device_node *np; + struct device_node *np, *parent; int ret; - for_each_child_of_node(of_find_node_by_path("/cpus"), np) { + parent = of_find_node_by_path("/cpus"); + if (!parent) { + pr_err("failed to find OF /cpus\n"); + return -ENOENT; + } + + for_each_child_of_node(parent, np) { if (of_get_property(np, "operating-points", NULL)) break; } -- cgit v1.2.1 From 29896178cff0cd6e4ee78edc26158cc197a6b504 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 1 Apr 2013 00:21:08 +0000 Subject: ACPI / SPI: Use parent's ACPI_HANDLE() in acpi_register_spi_devices() The ACPI handle of struct spi_master's dev member should not be set, because this causes that struct spi_master to be associated with the ACPI device node corresponding to its parent as the second "physical_device", which is incorrect (this happens during the registration of struct spi_master). Consequently, acpi_register_spi_devices() should use the ACPI handle of the parent of the struct spi_master it is called for rather than that struct spi_master's ACPI handle (which should be NULL). Make that happen and modify the spi-pxa2xx driver, which currently is the only driver for ACPI-enumerated SPI controller chips, not to set the ACPI handle for the struct spi_master it creates. Signed-off-by: Rafael J. Wysocki Acked-by: Mika Westerberg Acked-by: Mark Brown --- drivers/spi/spi-pxa2xx.c | 1 - drivers/spi/spi.c | 2 +- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 90b27a3508a6..810413883c79 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1168,7 +1168,6 @@ static int pxa2xx_spi_probe(struct platform_device *pdev) master->dev.parent = &pdev->dev; master->dev.of_node = pdev->dev.of_node; - ACPI_HANDLE_SET(&master->dev, ACPI_HANDLE(&pdev->dev)); /* the spi->mode bits understood by this driver: */ master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH | SPI_LOOP; diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index f996c600eb8c..5e073d897edb 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -984,7 +984,7 @@ static void acpi_register_spi_devices(struct spi_master *master) acpi_status status; acpi_handle handle; - handle = ACPI_HANDLE(&master->dev); + handle = ACPI_HANDLE(master->dev.parent); if (!handle) return; -- cgit v1.2.1 From 477fc03f5baaf5906ce04beba7dbcd0e5d1e9b30 Mon Sep 17 00:00:00 2001 From: Jingoo Han Date: Fri, 29 Mar 2013 03:40:00 +0200 Subject: fbmon: use VESA_DMT_VSYNC_HIGH to fix typo VESA_DMT_VSYNC_HIGH should be used instead of VESA_DMT_HSYNC_HIGH, because FB_SYNC_VERT_HIGH_ACT is related to vsync, not to hsync. Signed-off-by: Jingoo Han Acked-by: Steffen Trumtrar Signed-off-by: Tomi Valkeinen --- drivers/video/fbmon.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/video/fbmon.c b/drivers/video/fbmon.c index 94ad0f71383c..7f6709991a5c 100644 --- a/drivers/video/fbmon.c +++ b/drivers/video/fbmon.c @@ -1400,7 +1400,7 @@ int fb_videomode_from_videomode(const struct videomode *vm, fbmode->vmode = 0; if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH) fbmode->sync |= FB_SYNC_HOR_HIGH_ACT; - if (vm->dmt_flags & VESA_DMT_HSYNC_HIGH) + if (vm->dmt_flags & VESA_DMT_VSYNC_HIGH) fbmode->sync |= FB_SYNC_VERT_HIGH_ACT; if (vm->data_flags & DISPLAY_FLAGS_INTERLACED) fbmode->vmode |= FB_VMODE_INTERLACED; -- cgit v1.2.1 From 090da752cdd6f0786eee68c8dea8db7c8abd3798 Mon Sep 17 00:00:00 2001 From: Wang YanQing Date: Sat, 30 Mar 2013 04:53:00 +0200 Subject: video:uvesafb: Fix dereference NULL pointer code path platform_device_alloc could failed and return NULL, we should check this before call platform_device_put. Signed-off-by: Wang YanQing Signed-off-by: Tomi Valkeinen --- drivers/video/uvesafb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c index b75db0186488..d4284458377e 100644 --- a/drivers/video/uvesafb.c +++ b/drivers/video/uvesafb.c @@ -1973,7 +1973,8 @@ static int uvesafb_init(void) err = -ENOMEM; if (err) { - platform_device_put(uvesafb_device); + if (uvesafb_device) + platform_device_put(uvesafb_device); platform_driver_unregister(&uvesafb_driver); cn_del_callback(&uvesafb_cn_id); return err; -- cgit v1.2.1 From beb0ff390e208e71668a1389e3db02631a88cff5 Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Tue, 2 Apr 2013 12:26:15 +0000 Subject: cpufreq: Correct header guards typo It should be "governor". Signed-off-by: Borislav Petkov Acked-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/cpufreq_governor.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h index 46bde01eee62..cc4bd2f6838a 100644 --- a/drivers/cpufreq/cpufreq_governor.h +++ b/drivers/cpufreq/cpufreq_governor.h @@ -14,8 +14,8 @@ * published by the Free Software Foundation. */ -#ifndef _CPUFREQ_GOVERNER_H -#define _CPUFREQ_GOVERNER_H +#ifndef _CPUFREQ_GOVERNOR_H +#define _CPUFREQ_GOVERNOR_H #include #include @@ -175,4 +175,4 @@ bool need_load_eval(struct cpu_dbs_common_info *cdbs, unsigned int sampling_rate); int cpufreq_governor_dbs(struct dbs_data *dbs_data, struct cpufreq_policy *policy, unsigned int event); -#endif /* _CPUFREQ_GOVERNER_H */ +#endif /* _CPUFREQ_GOVERNOR_H */ -- cgit v1.2.1 From b34bb1ee71158d5b0f9028fb98afd026202bcfe9 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 1 Apr 2013 00:25:03 +0000 Subject: ACPI / I2C: Use parent's ACPI_HANDLE() in acpi_i2c_register_devices() The ACPI handle of struct i2c_adapter's dev member should not be set, because this causes that struct i2c_adapter to be associated with the ACPI device node corresponding to its parent as the second "physical_device", which is incorrect (this happens during the registration of struct i2c_adapter). Consequently, acpi_i2c_register_devices() should use the ACPI handle of the parent of the struct i2c_adapter it is called for rather than the struct i2c_adapter's ACPI handle (which should be NULL). Make that happen and modify the i2c-designware-platdrv driver, which currently is the only driver for ACPI-enumerated I2C controller chips, not to set the ACPI handle for the struct i2c_adapter it creates. Signed-off-by: Rafael J. Wysocki Reviewed-by: Aaron Lu Acked-by: Mika Westerberg Acked-by: Wolfram Sang --- drivers/acpi/acpi_i2c.c | 2 +- drivers/i2c/busses/i2c-designware-platdrv.c | 1 - 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/acpi_i2c.c b/drivers/acpi/acpi_i2c.c index 82045e3f5cac..a82c7626aa9b 100644 --- a/drivers/acpi/acpi_i2c.c +++ b/drivers/acpi/acpi_i2c.c @@ -90,7 +90,7 @@ void acpi_i2c_register_devices(struct i2c_adapter *adapter) acpi_handle handle; acpi_status status; - handle = ACPI_HANDLE(&adapter->dev); + handle = ACPI_HANDLE(adapter->dev.parent); if (!handle) return; diff --git a/drivers/i2c/busses/i2c-designware-platdrv.c b/drivers/i2c/busses/i2c-designware-platdrv.c index 0ceb6e1b0f65..e3085c487ace 100644 --- a/drivers/i2c/busses/i2c-designware-platdrv.c +++ b/drivers/i2c/busses/i2c-designware-platdrv.c @@ -182,7 +182,6 @@ static int dw_i2c_probe(struct platform_device *pdev) adap->algo = &i2c_dw_algo; adap->dev.parent = &pdev->dev; adap->dev.of_node = pdev->dev.of_node; - ACPI_HANDLE_SET(&adap->dev, ACPI_HANDLE(&pdev->dev)); r = i2c_add_numbered_adapter(adap); if (r) { -- cgit v1.2.1 From 6240a10dc55a954ce05a86d2f4bc27e473b6352c Mon Sep 17 00:00:00 2001 From: Alex Shi Date: Tue, 2 Apr 2013 01:56:54 +0200 Subject: cpuidle / ACPI: recover percpu ACPI processor cstate Commit ac3ebafa81af76d6 "ACPI / idle: remove usage of the statedata" changed the percpu processor cstate to a unified cstate in ACPI idle. That caused all our NHM boxes to boot hang or panic. 2178751 Task dump for CPU 1: 2178752 swapper/1 R running task 6736 0 1 0x00000000 2178753 ffff8801e8029dc8 ffffffff8101cf96 ffff8801e8029e28 ffffffff813d294b 2178754 0000000000000f99 0000000000000003 00000000003cf654 0000000025c17d03 2178755 ffff8801e8029e38 ffff8801e74fc000 00000002590dc5c4 ffffffff8163cdb0 2178756 Call Trace: 2178757 [] ? acpi_processor_ffh_cstate_enter+0x2d/0x2f 2178758 [] acpi_idle_enter_bm+0x1b1/0x236 2178759 [] ? disable_cpuidle+0x10/0x10 2178760 [] cpuidle_enter+0x12/0x14 2178761 [] cpuidle_wrap_enter+0x2f/0x6d 2178762 [] cpuidle_enter_tk+0x10/0x12 2178763 [] cpuidle_enter_state+0x12/0x3a 2178764 [] cpuidle_idle_call+0xe8/0x161 2178765 [] cpu_idle+0x5e/0xa4 2178766 [] start_secondary+0x1a9/0x1ad 2178767 Task dump for CPU 2: In fact, the ACPI idle is based on the assumption of difference percpu cstate structures that are necessary for the implementation to work cprrectly. A unique acpi_processor_cx is not sifficient by far. This patch is just a quick fix re-introducing the percpu cstates. If someone really wants to unify the ACPI cstates, please make sure that the whole software infrastructure is changed and take hardware as well as many different kinds of BIOS settings into account. [rjw: Changelog] Reported-by: LKP project Reported-by: Xie ChanglongX Tested-by: Yinghai Lu Signed-off-by: Alex Shi Signed-off-by: Rafael J. Wysocki --- drivers/acpi/processor_idle.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index fc95308e9a11..ee255c60bdac 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -66,7 +66,8 @@ module_param(latency_factor, uint, 0644); static DEFINE_PER_CPU(struct cpuidle_device *, acpi_cpuidle_device); -static struct acpi_processor_cx *acpi_cstate[CPUIDLE_STATE_MAX]; +static DEFINE_PER_CPU(struct acpi_processor_cx * [CPUIDLE_STATE_MAX], + acpi_cstate); static int disabled_by_idle_boot_param(void) { @@ -722,7 +723,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -745,7 +746,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, */ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) { - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); ACPI_FLUSH_CPU_CACHE(); @@ -775,7 +776,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -833,7 +834,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { struct acpi_processor *pr; - struct acpi_processor_cx *cx = acpi_cstate[index]; + struct acpi_processor_cx *cx = per_cpu(acpi_cstate[index], dev->cpu); pr = __this_cpu_read(processors); @@ -960,7 +961,7 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr, !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED)) continue; #endif - acpi_cstate[count] = cx; + per_cpu(acpi_cstate[count], dev->cpu) = cx; count++; if (count == CPUIDLE_STATE_MAX) -- cgit v1.2.1 From fcd99434fb5c137274d2e15dd2a6a7455f0f29ff Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Tue, 2 Apr 2013 05:15:16 +0000 Subject: bonding: get netdev_rx_handler_unregister out of locks Now that netdev_rx_handler_unregister contains synchronize_net(), we need to call it outside of bond->lock, cause it might sleep. Also, remove the already unneded synchronize_net(). Signed-off-by: Veaceslav Falico Acked-by: Eric Dumazet Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 6bbd90e1123c..a51241b2e621 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -1976,12 +1976,11 @@ static int __bond_release_one(struct net_device *bond_dev, return -EINVAL; } + write_unlock_bh(&bond->lock); /* unregister rx_handler early so bond_handle_frame wouldn't be called * for this slave anymore. */ netdev_rx_handler_unregister(slave_dev); - write_unlock_bh(&bond->lock); - synchronize_net(); write_lock_bh(&bond->lock); if (!all && !bond->params.fail_over_mac) { -- cgit v1.2.1 From bab6a9eac05360db25c81b0090f6b1195dd986cc Mon Sep 17 00:00:00 2001 From: Yan Burman Date: Tue, 2 Apr 2013 16:49:45 +0300 Subject: net/mlx4_en: Fix setting initial MAC address Commit 6bbb6d9 "net/mlx4_en: Optimize Rx fast path filter checks" introduced a regression under which the MAC address read from the card was not converted correctly (the most significant byte was not handled), fix that. Reviewed-by: Or Gerlitz Signed-off-by: Yan Burman Signed-off-by: David S. Miller --- drivers/net/ethernet/mellanox/mlx4/en_netdev.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c index f278b10ef714..30d78f806dc3 100644 --- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c +++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c @@ -411,8 +411,8 @@ static int mlx4_en_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid) static void mlx4_en_u64_to_mac(unsigned char dst_mac[ETH_ALEN + 2], u64 src_mac) { - unsigned int i; - for (i = ETH_ALEN - 1; i; --i) { + int i; + for (i = ETH_ALEN - 1; i >= 0; --i) { dst_mac[i] = src_mac & 0xff; src_mac >>= 8; } -- cgit v1.2.1 From a8ec3a662921220fc058ed6f7f3674697876d218 Mon Sep 17 00:00:00 2001 From: Ilija Hadzic Date: Tue, 2 Apr 2013 09:56:10 -0400 Subject: drm: correctly restore mappings if drm_open fails If first drm_open fails, the error-handling path will incorrectly restore inode's mapping to NULL. This can cause the crash later on. Fix by separately storing away mapping pointers that drm_open can touch and restore each from its own respective variable if the call fails. Fixes: https://bugzilla.novell.com/show_bug.cgi?id=807850 (thanks to Michal Hocko for investigating investigating and finding the root cause of the bug) Reference: http://lists.freedesktop.org/archives/dri-devel/2013-March/036564.html v2: Use one variable to store file and inode mapping since they are the same at the function entry. Fix spelling mistakes in commit message. v3: Add reference to the original bug report. Reported-by: Marco Munderloh Tested-by: Marco Munderloh Signed-off-by: Ilija Hadzic Cc: Michal Hocko Cc: stable@vger.kernel.org Signed-off-by: Dave Airlie --- drivers/gpu/drm/drm_fops.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c index 13fdcd10a605..429e07d0b0f1 100644 --- a/drivers/gpu/drm/drm_fops.c +++ b/drivers/gpu/drm/drm_fops.c @@ -123,6 +123,7 @@ int drm_open(struct inode *inode, struct file *filp) int retcode = 0; int need_setup = 0; struct address_space *old_mapping; + struct address_space *old_imapping; minor = idr_find(&drm_minors_idr, minor_id); if (!minor) @@ -137,6 +138,7 @@ int drm_open(struct inode *inode, struct file *filp) if (!dev->open_count++) need_setup = 1; mutex_lock(&dev->struct_mutex); + old_imapping = inode->i_mapping; old_mapping = dev->dev_mapping; if (old_mapping == NULL) dev->dev_mapping = &inode->i_data; @@ -159,8 +161,8 @@ int drm_open(struct inode *inode, struct file *filp) err_undo: mutex_lock(&dev->struct_mutex); - filp->f_mapping = old_mapping; - inode->i_mapping = old_mapping; + filp->f_mapping = old_imapping; + inode->i_mapping = old_imapping; iput(container_of(dev->dev_mapping, struct inode, i_data)); dev->dev_mapping = old_mapping; mutex_unlock(&dev->struct_mutex); -- cgit v1.2.1 From b8178f130e25c1bdac1c33e0996f1ff6e20ec08e Mon Sep 17 00:00:00 2001 From: Bjorn Helgaas Date: Mon, 1 Apr 2013 15:47:39 -0600 Subject: Revert "PCI/ACPI: Request _OSC control before scanning PCI root bus" This reverts commit 8c33f51df406e1a1f7fa4e9b244845b7ebd61fa6. Conflicts: drivers/acpi/pci_root.c This commit broke some pre-1.1 PCIe devices by leaving them with ASPM enabled. Previously, we had disabled ASPM on these devices because many of them don't implement it correctly (per 149e1637). Requesting _OSC control early means that aspm_disabled may be set before we scan the PCI bus and configure link ASPM state. But the ASPM configuration currently skips the check for pre-PCIe 1.1 devices when aspm_disabled is set, like this: acpi_pci_root_add acpi_pci_osc_support if (flags != base_flags) pcie_no_aspm aspm_disabled = 1 pci_acpi_scan_root ... pcie_aspm_init_link_state pcie_aspm_sanity_check if (!aspm_disabled) /* check for pre-PCIe 1.1 device */ Therefore, setting aspm_disabled early means that we leave ASPM enabled on these pre-PCIe 1.1 devices, which is a regression for some devices. The best fix would be to clean up the ASPM init so we can evaluate _OSC before scanning the bug (that way boot-time and hot-add discovery will work the same), but that requires significant rework. For now, we'll just revert the _OSC change as the lowest-risk fix. Reference: https://bugzilla.kernel.org/show_bug.cgi?id=55211 Signed-off-by: Bjorn Helgaas Acked-by: Rafael J. Wysocki Acked-by: Yinghai Lu CC: stable@vger.kernel.org # v3.8+ --- drivers/acpi/pci_root.c | 76 ++++++++++++++++++++++++------------------------- 1 file changed, 37 insertions(+), 39 deletions(-) (limited to 'drivers') diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 0ac546d5e53f..c740364d4abe 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -415,7 +415,6 @@ static int acpi_pci_root_add(struct acpi_device *device, struct acpi_pci_root *root; struct acpi_pci_driver *driver; u32 flags, base_flags; - bool is_osc_granted = false; root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL); if (!root) @@ -476,6 +475,30 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT; acpi_pci_osc_support(root, flags); + /* + * TBD: Need PCI interface for enumeration/configuration of roots. + */ + + mutex_lock(&acpi_pci_root_lock); + list_add_tail(&root->node, &acpi_pci_roots); + mutex_unlock(&acpi_pci_root_lock); + + /* + * Scan the Root Bridge + * -------------------- + * Must do this prior to any attempt to bind the root device, as the + * PCI namespace does not get created until this call is made (and + * thus the root bridge's pci_dev does not exist). + */ + root->bus = pci_acpi_scan_root(root); + if (!root->bus) { + printk(KERN_ERR PREFIX + "Bus %04x:%02x not present in PCI namespace\n", + root->segment, (unsigned int)root->secondary.start); + result = -ENODEV; + goto out_del_root; + } + /* Indicate support for various _OSC capabilities. */ if (pci_ext_cfg_avail()) flags |= OSC_EXT_PCI_CONFIG_SUPPORT; @@ -494,6 +517,7 @@ static int acpi_pci_root_add(struct acpi_device *device, flags = base_flags; } } + if (!pcie_ports_disabled && (flags & ACPI_PCIE_REQ_SUPPORT) == ACPI_PCIE_REQ_SUPPORT) { flags = OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL @@ -514,54 +538,28 @@ static int acpi_pci_root_add(struct acpi_device *device, status = acpi_pci_osc_control_set(device->handle, &flags, OSC_PCI_EXPRESS_CAP_STRUCTURE_CONTROL); if (ACPI_SUCCESS(status)) { - is_osc_granted = true; dev_info(&device->dev, "ACPI _OSC control (0x%02x) granted\n", flags); + if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) { + /* + * We have ASPM control, but the FADT indicates + * that it's unsupported. Clear it. + */ + pcie_clear_aspm(root->bus); + } } else { - is_osc_granted = false; dev_info(&device->dev, "ACPI _OSC request failed (%s), " "returned control mask: 0x%02x\n", acpi_format_exception(status), flags); + pr_info("ACPI _OSC control for PCIe not granted, " + "disabling ASPM\n"); + pcie_no_aspm(); } } else { dev_info(&device->dev, - "Unable to request _OSC control " - "(_OSC support mask: 0x%02x)\n", flags); - } - - /* - * TBD: Need PCI interface for enumeration/configuration of roots. - */ - - mutex_lock(&acpi_pci_root_lock); - list_add_tail(&root->node, &acpi_pci_roots); - mutex_unlock(&acpi_pci_root_lock); - - /* - * Scan the Root Bridge - * -------------------- - * Must do this prior to any attempt to bind the root device, as the - * PCI namespace does not get created until this call is made (and - * thus the root bridge's pci_dev does not exist). - */ - root->bus = pci_acpi_scan_root(root); - if (!root->bus) { - printk(KERN_ERR PREFIX - "Bus %04x:%02x not present in PCI namespace\n", - root->segment, (unsigned int)root->secondary.start); - result = -ENODEV; - goto out_del_root; - } - - /* ASPM setting */ - if (is_osc_granted) { - if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_ASPM) - pcie_clear_aspm(root->bus); - } else { - pr_info("ACPI _OSC control for PCIe not granted, " - "disabling ASPM\n"); - pcie_no_aspm(); + "Unable to request _OSC control " + "(_OSC support mask: 0x%02x)\n", flags); } pci_acpi_add_bus_pm_notifier(device, root->bus); -- cgit v1.2.1 From 6e0eda3c389887168455b92b6f7b48f552227067 Mon Sep 17 00:00:00 2001 From: Konstantin Khlebnikov Date: Thu, 14 Mar 2013 18:49:37 +0400 Subject: PCI: Don't try to disable Bus Master on disconnected PCI devices This is a fix for commit 7897e60227 ("PCI: Disable Bus Master unconditionally in pci_device_shutdown()"). Vivek reported that with this commit, kexec failed because none of his SATA disks came up. A ->shutdown() callback might put the device in D3cold, which means config space is no longer available. [bhelgaas: changelog] Link: https://lkml.org/lkml/2013/3/12/529 Reported-and-Tested-by: Vivek Goyal Signed-off-by: Konstantin Khlebnikov Signed-off-by: Bjorn Helgaas Cc: Rafael J. Wysocki --- drivers/pci/pci-driver.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 1fa1e482a999..79277fb36c6b 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -390,9 +390,10 @@ static void pci_device_shutdown(struct device *dev) /* * Turn off Bus Master bit on the device to tell it to not - * continue to do DMA + * continue to do DMA. Don't touch devices in D3cold or unknown states. */ - pci_clear_master(pci_dev); + if (pci_dev->current_state <= PCI_D3hot) + pci_clear_master(pci_dev); } #ifdef CONFIG_PM -- cgit v1.2.1 From e66cd5372d09d58002b2779a3bcdc564d6348883 Mon Sep 17 00:00:00 2001 From: Tony Luck Date: Wed, 3 Apr 2013 13:17:20 +0200 Subject: ACPI / BGRT: Don't let users configure BGRT on non X86 systems Fengguang Wu's 0-Day kernel build testing backend found the following build error for an allmodconfig build on ia64: drivers/built-in.o: In function `show_yoffset': >> bgrt.c:(.text+0xe5a71): undefined reference to `bgrt_tab' >> bgrt.c:(.text+0xe5a91): undefined reference to `bgrt_tab' drivers/built-in.o: In function `show_xoffset': >> bgrt.c:(.text+0xe5b51): undefined reference to `bgrt_tab' >> bgrt.c:(.text+0xe5b71): undefined reference to `bgrt_tab' drivers/built-in.o: In function `show_type': >> bgrt.c:(.text+0xe5c31): undefined reference to `bgrt_tab' drivers/built-in.o:bgrt.c:(.text+0xe5c51): more undefined references to `bgrt_tab' follow drivers/built-in.o: In function `bgrt_init': bgrt.c:(.init.text+0x8931): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8932): undefined reference to `bgrt_image_size' bgrt.c:(.init.text+0x8950): undefined reference to `bgrt_image' bgrt.c:(.init.text+0x8960): undefined reference to `bgrt_image_size' The problem is that all these undefined names are provided by arch/x86/platform/efi/efi-bgrt.c - which is obviously not available to the ia64 build. It doesn't seem useful to provide the BGRT support for Itanium (many systems are headless and have no graphics at all). So just don't let users configure this driver on non-X86 machines. Reported-by: Fengguang Wu Acked-by: H. Peter Anvin Signed-off-by: Tony Luck Signed-off-by: Rafael J. Wysocki --- drivers/acpi/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 92ed9692c47e..4bf68c8d4797 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -396,7 +396,7 @@ config ACPI_CUSTOM_METHOD config ACPI_BGRT bool "Boottime Graphics Resource Table support" - depends on EFI + depends on EFI && X86 help This driver adds support for exposing the ACPI Boottime Graphics Resource Table, which allows the operating system to obtain -- cgit v1.2.1 From 24ad0ef9c8b946ed2abe681e4e44f4a1e643d882 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Thu, 28 Mar 2013 11:07:29 +0000 Subject: PCI/ACPI: Always resume devices on ACPI wakeup notifications It turns out that the _Lxx control methods provided by some BIOSes clear the PME Status bit of PCI devices they handle, which means that pci_acpi_wake_dev() cannot really use that bit to check whether or not the device has signalled wakeup. One symptom of the problem is, for example, that when an affected PCI USB controller is runtime-suspended, then plugging in a new USB device into one of the controller's ports will not wake up the controller, which should happen. For this reason, make pci_acpi_wake_dev() always attempt to resume the device it is called for regardless of the device's PME Status bit value (that bit still has to be cleared if set at this point, though). Reported-by: Sarah Sharp Signed-off-by: Rafael J. Wysocki Signed-off-by: Bjorn Helgaas Acked-by: Matthew Garrett CC: stable@vger.kernel.org # v3.7+ --- drivers/pci/pci-acpi.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index dee5dddaa292..5147c210df52 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -53,14 +53,15 @@ static void pci_acpi_wake_dev(acpi_handle handle, u32 event, void *context) return; } - if (!pci_dev->pm_cap || !pci_dev->pme_support - || pci_check_pme_status(pci_dev)) { - if (pci_dev->pme_poll) - pci_dev->pme_poll = false; + /* Clear PME Status if set. */ + if (pci_dev->pme_support) + pci_check_pme_status(pci_dev); - pci_wakeup_event(pci_dev); - pm_runtime_resume(&pci_dev->dev); - } + if (pci_dev->pme_poll) + pci_dev->pme_poll = false; + + pci_wakeup_event(pci_dev); + pm_runtime_resume(&pci_dev->dev); if (pci_dev->subordinate) pci_pme_wakeup_bus(pci_dev->subordinate); -- cgit v1.2.1 From de7d5f729c72638f41d7c17487bccb1c570ff144 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Sat, 30 Mar 2013 23:38:02 +0100 Subject: PCI/PM: Disable runtime PM of PCIe ports The runtime PM of PCIe ports turns out to be quite fragile, as in some cases things work while in some other cases they don't and we don't seem to have a good way to determine whether or not they are going to work in advance. For this reason, avoid enabling runtime PM for PCIe ports by keeping their runtime PM reference counters always above 0 for the time being. When a PCIe port is suspended, it can no longer report events like hotplug, so hotplug below the port may not work, as in the bug report below. [bhelgaas: changelog, stable] Reference: https://bugzilla.kernel.org/show_bug.cgi?id=53811 Signed-off-by: Rafael J. Wysocki Signed-off-by: Bjorn Helgaas CC: stable@vger.kernel.org # v3.6+ --- drivers/pci/pcie/portdrv_pci.c | 13 ------------- 1 file changed, 13 deletions(-) (limited to 'drivers') diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c index 08c243ab034e..ed4d09498337 100644 --- a/drivers/pci/pcie/portdrv_pci.c +++ b/drivers/pci/pcie/portdrv_pci.c @@ -184,14 +184,6 @@ static const struct dev_pm_ops pcie_portdrv_pm_ops = { #define PCIE_PORTDRV_PM_OPS NULL #endif /* !PM */ -/* - * PCIe port runtime suspend is broken for some chipsets, so use a - * black list to disable runtime PM for these chipsets. - */ -static const struct pci_device_id port_runtime_pm_black_list[] = { - { /* end: all zeroes */ } -}; - /* * pcie_portdrv_probe - Probe PCI-Express port devices * @dev: PCI-Express port device being probed @@ -225,16 +217,11 @@ static int pcie_portdrv_probe(struct pci_dev *dev, * it by default. */ dev->d3cold_allowed = false; - if (!pci_match_id(port_runtime_pm_black_list, dev)) - pm_runtime_put_noidle(&dev->dev); - return 0; } static void pcie_portdrv_remove(struct pci_dev *dev) { - if (!pci_match_id(port_runtime_pm_black_list, dev)) - pm_runtime_get_noresume(&dev->dev); pcie_port_device_remove(dev); pci_disable_device(dev); } -- cgit v1.2.1 From f1a9a149abc86903e81dd1b2e720f3f89874384b Mon Sep 17 00:00:00 2001 From: Benjamin Tissoires Date: Tue, 2 Apr 2013 11:11:52 +0200 Subject: HID: magicmouse: fix race between input_register() and probe() Since kernel 3.7, it appears that the input registration occured before the end of magicmouse_setup_input(). This is shown by receiving a lot of "EV_SYN SYN_REPORT 1" instead of normal "EV_SYN SYN_REPORT 0". This value means that the output buffer is full, and the user space is loosing events. Using .input_configured guarantees that the race is not occuring, and that the call of "input_set_events_per_packet(input, 60)" is taken into account by input_register(). Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=908604 Cc: stable@vger.kernel.org Reported-and-Tested-By: Clarke Wixon Signed-off-by: Benjamin Tissoires Signed-off-by: Jiri Kosina --- drivers/hid/hid-magicmouse.c | 29 ++++++++++++++++++++--------- 1 file changed, 20 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/hid/hid-magicmouse.c b/drivers/hid/hid-magicmouse.c index f7f113ba083e..a8ce44296cfd 100644 --- a/drivers/hid/hid-magicmouse.c +++ b/drivers/hid/hid-magicmouse.c @@ -462,6 +462,21 @@ static int magicmouse_input_mapping(struct hid_device *hdev, return 0; } +static void magicmouse_input_configured(struct hid_device *hdev, + struct hid_input *hi) + +{ + struct magicmouse_sc *msc = hid_get_drvdata(hdev); + + int ret = magicmouse_setup_input(msc->input, hdev); + if (ret) { + hid_err(hdev, "magicmouse setup input failed (%d)\n", ret); + /* clean msc->input to notify probe() of the failure */ + msc->input = NULL; + } +} + + static int magicmouse_probe(struct hid_device *hdev, const struct hid_device_id *id) { @@ -493,15 +508,10 @@ static int magicmouse_probe(struct hid_device *hdev, goto err_free; } - /* We do this after hid-input is done parsing reports so that - * hid-input uses the most natural button and axis IDs. - */ - if (msc->input) { - ret = magicmouse_setup_input(msc->input, hdev); - if (ret) { - hid_err(hdev, "magicmouse setup input failed (%d)\n", ret); - goto err_stop_hw; - } + if (!msc->input) { + hid_err(hdev, "magicmouse input not registered\n"); + ret = -ENOMEM; + goto err_stop_hw; } if (id->product == USB_DEVICE_ID_APPLE_MAGICMOUSE) @@ -568,6 +578,7 @@ static struct hid_driver magicmouse_driver = { .remove = magicmouse_remove, .raw_event = magicmouse_raw_event, .input_mapping = magicmouse_input_mapping, + .input_configured = magicmouse_input_configured, }; module_hid_driver(magicmouse_driver); -- cgit v1.2.1 From e2409d83434d77874b461b78af6a19cd6e6a1280 Mon Sep 17 00:00:00 2001 From: hayeswang Date: Sun, 31 Mar 2013 17:02:04 +0000 Subject: r8169: fix auto speed down issue It would cause no link after suspending or shutdowning when the nic changes the speed to 10M and connects to a link partner which forces the speed to 100M. Check the link partner ability to determine which speed to set. Signed-off-by: Hayes Wang Acked-by: Francois Romieu Signed-off-by: David S. Miller --- drivers/net/ethernet/realtek/r8169.c | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c index 28fb50a1e9c3..4ecbe64a758d 100644 --- a/drivers/net/ethernet/realtek/r8169.c +++ b/drivers/net/ethernet/realtek/r8169.c @@ -3818,6 +3818,30 @@ static void rtl_init_mdio_ops(struct rtl8169_private *tp) } } +static void rtl_speed_down(struct rtl8169_private *tp) +{ + u32 adv; + int lpa; + + rtl_writephy(tp, 0x1f, 0x0000); + lpa = rtl_readphy(tp, MII_LPA); + + if (lpa & (LPA_10HALF | LPA_10FULL)) + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full; + else if (lpa & (LPA_100HALF | LPA_100FULL)) + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full; + else + adv = ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full | + ADVERTISED_100baseT_Half | ADVERTISED_100baseT_Full | + (tp->mii.supports_gmii ? + ADVERTISED_1000baseT_Half | + ADVERTISED_1000baseT_Full : 0); + + rtl8169_set_speed(tp->dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL, + adv); +} + static void rtl_wol_suspend_quirk(struct rtl8169_private *tp) { void __iomem *ioaddr = tp->mmio_addr; @@ -3848,9 +3872,7 @@ static bool rtl_wol_pll_power_down(struct rtl8169_private *tp) if (!(__rtl8169_get_wol(tp) & WAKE_ANY)) return false; - rtl_writephy(tp, 0x1f, 0x0000); - rtl_writephy(tp, MII_BMCR, 0x0000); - + rtl_speed_down(tp); rtl_wol_suspend_quirk(tp); return true; -- cgit v1.2.1 From 31d1670e73f4911fe401273a8f576edc9c2b5fea Mon Sep 17 00:00:00 2001 From: Hannes Frederic Sowa Date: Tue, 2 Apr 2013 14:36:46 +0000 Subject: atl1e: limit gso segment size to prevent generation of wrong ip length fields The limit of 0x3c00 is taken from the windows driver. Suggested-by: Huang, Xiong Cc: Huang, Xiong Cc: Eric Dumazet Signed-off-by: Hannes Frederic Sowa Signed-off-by: David S. Miller --- drivers/net/ethernet/atheros/atl1e/atl1e.h | 2 +- drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e.h b/drivers/net/ethernet/atheros/atl1e/atl1e.h index edfdf6b950e7..b5fd934585e9 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e.h +++ b/drivers/net/ethernet/atheros/atl1e/atl1e.h @@ -186,7 +186,7 @@ struct atl1e_tpd_desc { /* how about 0x2000 */ #define MAX_TX_BUF_LEN 0x2000 #define MAX_TX_BUF_SHIFT 13 -/*#define MAX_TX_BUF_LEN 0x3000 */ +#define MAX_TSO_SEG_SIZE 0x3c00 /* rrs word 1 bit 0:31 */ #define RRS_RX_CSUM_MASK 0xFFFF diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c index f73d5609439a..ac25f05ff68f 100644 --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c @@ -2329,6 +2329,7 @@ static int atl1e_probe(struct pci_dev *pdev, const struct pci_device_id *ent) INIT_WORK(&adapter->reset_task, atl1e_reset_task); INIT_WORK(&adapter->link_chg_task, atl1e_link_chg_task); + netif_set_gso_max_size(netdev, MAX_TSO_SEG_SIZE); err = register_netdev(netdev); if (err) { netdev_err(netdev, "register netdevice failed\n"); -- cgit v1.2.1 From 4de79c737b200492195ebc54a887075327e1ec1d Mon Sep 17 00:00:00 2001 From: Veaceslav Falico Date: Wed, 3 Apr 2013 05:46:33 +0000 Subject: bonding: remove sysfs before removing devices We have a race condition if we try to rmmod bonding and simultaneously add a bond master through sysfs. In bonding_exit() we first remove the devices (through rtnl_link_unregister() ) and only after that we remove the sysfs. If we manage to add a device through sysfs after that the devices were removed - we'll end up with that device/sysfs structure and with the module unloaded. Fix this by first removing the sysfs and only after that calling rtnl_link_unregister(). Signed-off-by: Veaceslav Falico Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index a51241b2e621..171b10f167a5 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4902,8 +4902,8 @@ static void __exit bonding_exit(void) bond_destroy_debugfs(); - rtnl_link_unregister(&bond_link_ops); unregister_pernet_subsys(&bond_net_ops); + rtnl_link_unregister(&bond_link_ops); #ifdef CONFIG_NET_POLL_CONTROLLER /* -- cgit v1.2.1 From f01fc1a82c2ee68726b400fadb156bd623b5f2f1 Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Wed, 3 Apr 2013 16:50:54 +0000 Subject: ixgbe: fix registration order of driver and DCA nofitication ixgbe_notify_dca cannot be called before driver registration because it expects driver's klist_devices to be allocated and initialized. While on it make sure debugfs files are removed when registration fails. Cc: stable Signed-off-by: Jakub Kicinski Tested-by: Phil Schmitt Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) (limited to 'drivers') diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c index db5611ae407e..79f4a26ea6cc 100644 --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -7922,12 +7922,19 @@ static int __init ixgbe_init_module(void) ixgbe_dbg_init(); #endif /* CONFIG_DEBUG_FS */ + ret = pci_register_driver(&ixgbe_driver); + if (ret) { +#ifdef CONFIG_DEBUG_FS + ixgbe_dbg_exit(); +#endif /* CONFIG_DEBUG_FS */ + return ret; + } + #ifdef CONFIG_IXGBE_DCA dca_register_notify(&dca_notifier); #endif - ret = pci_register_driver(&ixgbe_driver); - return ret; + return 0; } module_init(ixgbe_init_module); -- cgit v1.2.1 From b844fe691897221ad0d5e0279c8ea9e3e4a46982 Mon Sep 17 00:00:00 2001 From: "Darrick J. Wong" Date: Fri, 5 Apr 2013 15:36:32 +0100 Subject: dm cache: fix writes to cache device in writethrough mode The dm-cache writethrough strategy introduced by commit e2e74d617eadc15 ("dm cache: fix race in writethrough implementation") issues a bio to the origin device, remaps and then issues the bio to the cache device. This more conservative in-series approach was selected to favor correctness over performance (of the previous parallel writethrough). However, this in-series implementation that reuses the same bio to write both the origin and cache device didn't take into account that the block layer's req_bio_endio() modifies a completing bio's bi_sector and bi_size. So the new writethrough strategy needs to preserve these bio fields, and restore them before submission to the cache device, otherwise nothing gets written to the cache (because bi_size is 0). This patch adds a struct dm_bio_details field to struct per_bio_data, and uses dm_bio_record() and dm_bio_restore() to ensure the bio is restored before reissuing to the cache device. Adding such a large structure to the per_bio_data is not ideal but we can improve this later, for now correctness is the important thing. This problem initially went unnoticed because the dm-cache test-suite uses a linear DM device for the dm-cache device's origin device. Writethrough worked as expected because DM submits a *clone* of the original bio, so the original bio which was reused for the cache was never touched. Signed-off-by: Darrick J. Wong Signed-off-by: Joe Thornber Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers') diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 66120bd46d15..1ab122a75764 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -6,6 +6,7 @@ #include "dm.h" #include "dm-bio-prison.h" +#include "dm-bio-record.h" #include "dm-cache-metadata.h" #include @@ -205,6 +206,7 @@ struct per_bio_data { struct cache *cache; dm_cblock_t cblock; bio_end_io_t *saved_bi_end_io; + struct dm_bio_details bio_details; }; struct dm_cache_migration { @@ -643,6 +645,7 @@ static void writethrough_endio(struct bio *bio, int err) return; } + dm_bio_restore(&pb->bio_details, bio); remap_to_cache(pb->cache, bio, pb->cblock); /* @@ -667,6 +670,7 @@ static void remap_to_origin_then_cache(struct cache *cache, struct bio *bio, pb->cache = cache; pb->cblock = cblock; pb->saved_bi_end_io = bio->bi_end_io; + dm_bio_record(&pb->bio_details, bio); bio->bi_end_io = writethrough_endio; remap_to_origin_clear_discard(pb->cache, bio, oblock); -- cgit v1.2.1 From 19b0092e265fe9ab129902373c3127c0e0be3376 Mon Sep 17 00:00:00 2001 From: Mike Snitzer Date: Fri, 5 Apr 2013 15:36:34 +0100 Subject: dm cache: reduce bio front_pad size in writeback mode A recent patch to fix the dm cache target's writethrough mode extended the bio's front_pad to include a 1056-byte struct dm_bio_details. Writeback mode doesn't need this, so this patch reduces the per_bio_data_size to 16 bytes in this case instead of 1096. The dm_bio_details structure was added in "dm cache: fix writes to cache device in writethrough mode" which fixed commit e2e74d617e ("dm cache: fix race in writethrough implementation"). In writeback mode we avoid allocating the writethrough-specific members of the per_bio_data structure (the dm_bio_details structure included). Signed-off-by: Mike Snitzer Signed-off-by: Alasdair G Kergon --- drivers/md/dm-cache-target.c | 47 ++++++++++++++++++++++++++++++++------------ 1 file changed, 34 insertions(+), 13 deletions(-) (limited to 'drivers') diff --git a/drivers/md/dm-cache-target.c b/drivers/md/dm-cache-target.c index 1ab122a75764..10744091e6ca 100644 --- a/drivers/md/dm-cache-target.c +++ b/drivers/md/dm-cache-target.c @@ -202,7 +202,11 @@ struct per_bio_data { unsigned req_nr:2; struct dm_deferred_entry *all_io_entry; - /* writethrough fields */ + /* + * writethrough fields. These MUST remain at the end of this + * structure and the 'cache' member must be the first as it + * is used to determine the offsetof the writethrough fields. + */ struct cache *cache; dm_cblock_t cblock; bio_end_io_t *saved_bi_end_io; @@ -515,16 +519,28 @@ static void save_stats(struct cache *cache) /*---------------------------------------------------------------- * Per bio data *--------------------------------------------------------------*/ -static struct per_bio_data *get_per_bio_data(struct bio *bio) + +/* + * If using writeback, leave out struct per_bio_data's writethrough fields. + */ +#define PB_DATA_SIZE_WB (offsetof(struct per_bio_data, cache)) +#define PB_DATA_SIZE_WT (sizeof(struct per_bio_data)) + +static size_t get_per_bio_data_size(struct cache *cache) +{ + return cache->features.write_through ? PB_DATA_SIZE_WT : PB_DATA_SIZE_WB; +} + +static struct per_bio_data *get_per_bio_data(struct bio *bio, size_t data_size) { - struct per_bio_data *pb = dm_per_bio_data(bio, sizeof(struct per_bio_data)); + struct per_bio_data *pb = dm_per_bio_data(bio, data_size); BUG_ON(!pb); return pb; } -static struct per_bio_data *init_per_bio_data(struct bio *bio) +static struct per_bio_data *init_per_bio_data(struct bio *bio, size_t data_size) { - struct per_bio_data *pb = get_per_bio_data(bio); + struct per_bio_data *pb = get_per_bio_data(bio, data_size); pb->tick = false; pb->req_nr = dm_bio_get_target_bio_nr(bio); @@ -558,7 +574,8 @@ static void remap_to_cache(struct cache *cache, struct bio *bio, static void check_if_tick_bio_needed(struct cache *cache, struct bio *bio) { unsigned long flags; - struct per_bio_data *pb = get_per_bio_data(bio); + size_t pb_data_size = get_per_bio_data_size(cache); + struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); spin_lock_irqsave(&cache->lock, flags); if (cache->need_tick_bio && @@ -637,7 +654,7 @@ static void defer_writethrough_bio(struct cache *cache, struct bio *bio) static void writethrough_endio(struct bio *bio, int err) { - struct per_bio_data *pb = get_per_bio_data(bio); + struct per_bio_data *pb = get_per_bio_data(bio, PB_DATA_SIZE_WT); bio->bi_end_io = pb->saved_bi_end_io; if (err) { @@ -665,7 +682,7 @@ static void writethrough_endio(struct bio *bio, int err) static void remap_to_origin_then_cache(struct cache *cache, struct bio *bio, dm_oblock_t oblock, dm_cblock_t cblock) { - struct per_bio_data *pb = get_per_bio_data(bio); + struct per_bio_data *pb = get_per_bio_data(bio, PB_DATA_SIZE_WT); pb->cache = cache; pb->cblock = cblock; @@ -1039,7 +1056,8 @@ static void defer_bio(struct cache *cache, struct bio *bio) static void process_flush_bio(struct cache *cache, struct bio *bio) { - struct per_bio_data *pb = get_per_bio_data(bio); + size_t pb_data_size = get_per_bio_data_size(cache); + struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); BUG_ON(bio->bi_size); if (!pb->req_nr) @@ -1111,7 +1129,8 @@ static void process_bio(struct cache *cache, struct prealloc *structs, dm_oblock_t block = get_bio_block(cache, bio); struct dm_bio_prison_cell *cell_prealloc, *old_ocell, *new_ocell; struct policy_result lookup_result; - struct per_bio_data *pb = get_per_bio_data(bio); + size_t pb_data_size = get_per_bio_data_size(cache); + struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); bool discarded_block = is_discarded_oblock(cache, block); bool can_migrate = discarded_block || spare_migration_bandwidth(cache); @@ -1885,7 +1904,6 @@ static int cache_create(struct cache_args *ca, struct cache **result) cache->ti = ca->ti; ti->private = cache; - ti->per_bio_data_size = sizeof(struct per_bio_data); ti->num_flush_bios = 2; ti->flush_supported = true; @@ -1894,6 +1912,7 @@ static int cache_create(struct cache_args *ca, struct cache **result) ti->discard_zeroes_data_unsupported = true; memcpy(&cache->features, &ca->features, sizeof(cache->features)); + ti->per_bio_data_size = get_per_bio_data_size(cache); cache->callbacks.congested_fn = cache_is_congested; dm_table_add_target_callbacks(ti->table, &cache->callbacks); @@ -2096,6 +2115,7 @@ static int cache_map(struct dm_target *ti, struct bio *bio) int r; dm_oblock_t block = get_bio_block(cache, bio); + size_t pb_data_size = get_per_bio_data_size(cache); bool can_migrate = false; bool discarded_block; struct dm_bio_prison_cell *cell; @@ -2112,7 +2132,7 @@ static int cache_map(struct dm_target *ti, struct bio *bio) return DM_MAPIO_REMAPPED; } - pb = init_per_bio_data(bio); + pb = init_per_bio_data(bio, pb_data_size); if (bio->bi_rw & (REQ_FLUSH | REQ_FUA | REQ_DISCARD)) { defer_bio(cache, bio); @@ -2197,7 +2217,8 @@ static int cache_end_io(struct dm_target *ti, struct bio *bio, int error) { struct cache *cache = ti->private; unsigned long flags; - struct per_bio_data *pb = get_per_bio_data(bio); + size_t pb_data_size = get_per_bio_data_size(cache); + struct per_bio_data *pb = get_per_bio_data(bio, pb_data_size); if (pb->tick) { policy_tick(cache->policy); -- cgit v1.2.1 From e24b0bfa2f0446ffaad2661040be23668133aef8 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Fri, 5 Apr 2013 18:16:34 +0200 Subject: Revert "drivers/rtc/rtc-at91rm9200.c: use a variable for storing IMR" This reverts commit 0ef1594c017521ea89278e80fe3f80dafb17abde. This patch introduced a few races which cannot be easily fixed with a small follow-up patch. Furthermore, the SoC with the broken hardware register, which this patch intended to add support for, can only be used with device trees, which this driver currently does not support. [ Here is the discussion that led to this "revert" patch: https://lkml.org/lkml/2013/4/3/176 ] Cc: stable Signed-off-by: Johan Hovold Signed-off-by: Nicolas Ferre Signed-off-by: Linus Torvalds --- drivers/rtc/rtc-at91rm9200.c | 50 +++++++++++++++++--------------------------- drivers/rtc/rtc-at91rm9200.h | 1 + 2 files changed, 20 insertions(+), 31 deletions(-) (limited to 'drivers') diff --git a/drivers/rtc/rtc-at91rm9200.c b/drivers/rtc/rtc-at91rm9200.c index 0a9f27e094ea..434ebc3a99dc 100644 --- a/drivers/rtc/rtc-at91rm9200.c +++ b/drivers/rtc/rtc-at91rm9200.c @@ -44,7 +44,6 @@ static DECLARE_COMPLETION(at91_rtc_updated); static unsigned int at91_alarm_year = AT91_RTC_EPOCH; static void __iomem *at91_rtc_regs; static int irq; -static u32 at91_rtc_imr; /* * Decode time/date into rtc_time structure @@ -109,11 +108,9 @@ static int at91_rtc_settime(struct device *dev, struct rtc_time *tm) cr = at91_rtc_read(AT91_RTC_CR); at91_rtc_write(AT91_RTC_CR, cr | AT91_RTC_UPDCAL | AT91_RTC_UPDTIM); - at91_rtc_imr |= AT91_RTC_ACKUPD; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ACKUPD); wait_for_completion(&at91_rtc_updated); /* wait for ACKUPD interrupt */ at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD); - at91_rtc_imr &= ~AT91_RTC_ACKUPD; at91_rtc_write(AT91_RTC_TIMR, bin2bcd(tm->tm_sec) << 0 @@ -145,7 +142,7 @@ static int at91_rtc_readalarm(struct device *dev, struct rtc_wkalrm *alrm) tm->tm_yday = rtc_year_days(tm->tm_mday, tm->tm_mon, tm->tm_year); tm->tm_year = at91_alarm_year - 1900; - alrm->enabled = (at91_rtc_imr & AT91_RTC_ALARM) + alrm->enabled = (at91_rtc_read(AT91_RTC_IMR) & AT91_RTC_ALARM) ? 1 : 0; dev_dbg(dev, "%s(): %4d-%02d-%02d %02d:%02d:%02d\n", __func__, @@ -171,7 +168,6 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) tm.tm_sec = alrm->time.tm_sec; at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); - at91_rtc_imr &= ~AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_TIMALR, bin2bcd(tm.tm_sec) << 0 | bin2bcd(tm.tm_min) << 8 @@ -184,7 +180,6 @@ static int at91_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm) if (alrm->enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); - at91_rtc_imr |= AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); } @@ -201,12 +196,9 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) if (enabled) { at91_rtc_write(AT91_RTC_SCCR, AT91_RTC_ALARM); - at91_rtc_imr |= AT91_RTC_ALARM; at91_rtc_write(AT91_RTC_IER, AT91_RTC_ALARM); - } else { + } else at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ALARM); - at91_rtc_imr &= ~AT91_RTC_ALARM; - } return 0; } @@ -215,10 +207,12 @@ static int at91_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) */ static int at91_rtc_proc(struct device *dev, struct seq_file *seq) { + unsigned long imr = at91_rtc_read(AT91_RTC_IMR); + seq_printf(seq, "update_IRQ\t: %s\n", - (at91_rtc_imr & AT91_RTC_ACKUPD) ? "yes" : "no"); + (imr & AT91_RTC_ACKUPD) ? "yes" : "no"); seq_printf(seq, "periodic_IRQ\t: %s\n", - (at91_rtc_imr & AT91_RTC_SECEV) ? "yes" : "no"); + (imr & AT91_RTC_SECEV) ? "yes" : "no"); return 0; } @@ -233,7 +227,7 @@ static irqreturn_t at91_rtc_interrupt(int irq, void *dev_id) unsigned int rtsr; unsigned long events = 0; - rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_imr; + rtsr = at91_rtc_read(AT91_RTC_SR) & at91_rtc_read(AT91_RTC_IMR); if (rtsr) { /* this interrupt is shared! Is it ours? */ if (rtsr & AT91_RTC_ALARM) events |= (RTC_AF | RTC_IRQF); @@ -297,7 +291,6 @@ static int __init at91_rtc_probe(struct platform_device *pdev) at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); - at91_rtc_imr = 0; ret = request_irq(irq, at91_rtc_interrupt, IRQF_SHARED, @@ -336,7 +329,6 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) at91_rtc_write(AT91_RTC_IDR, AT91_RTC_ACKUPD | AT91_RTC_ALARM | AT91_RTC_SECEV | AT91_RTC_TIMEV | AT91_RTC_CALEV); - at91_rtc_imr = 0; free_irq(irq, pdev); rtc_device_unregister(rtc); @@ -349,35 +341,31 @@ static int __exit at91_rtc_remove(struct platform_device *pdev) /* AT91RM9200 RTC Power management control */ -static u32 at91_rtc_bkpimr; - +static u32 at91_rtc_imr; static int at91_rtc_suspend(struct device *dev) { /* this IRQ is shared with DBGU and other hardware which isn't * necessarily doing PM like we are... */ - at91_rtc_bkpimr = at91_rtc_imr & (AT91_RTC_ALARM|AT91_RTC_SECEV); - if (at91_rtc_bkpimr) { - if (device_may_wakeup(dev)) { + at91_rtc_imr = at91_rtc_read(AT91_RTC_IMR) + & (AT91_RTC_ALARM|AT91_RTC_SECEV); + if (at91_rtc_imr) { + if (device_may_wakeup(dev)) enable_irq_wake(irq); - } else { - at91_rtc_write(AT91_RTC_IDR, at91_rtc_bkpimr); - at91_rtc_imr &= ~at91_rtc_bkpimr; - } -} + else + at91_rtc_write(AT91_RTC_IDR, at91_rtc_imr); + } return 0; } static int at91_rtc_resume(struct device *dev) { - if (at91_rtc_bkpimr) { - if (device_may_wakeup(dev)) { + if (at91_rtc_imr) { + if (device_may_wakeup(dev)) disable_irq_wake(irq); - } else { - at91_rtc_imr |= at91_rtc_bkpimr; - at91_rtc_write(AT91_RTC_IER, at91_rtc_bkpimr); - } + else + at91_rtc_write(AT91_RTC_IER, at91_rtc_imr); } return 0; } diff --git a/drivers/rtc/rtc-at91rm9200.h b/drivers/rtc/rtc-at91rm9200.h index 5f940b6844cb..da1945e5f714 100644 --- a/drivers/rtc/rtc-at91rm9200.h +++ b/drivers/rtc/rtc-at91rm9200.h @@ -64,6 +64,7 @@ #define AT91_RTC_SCCR 0x1c /* Status Clear Command Register */ #define AT91_RTC_IER 0x20 /* Interrupt Enable Register */ #define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */ +#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */ #define AT91_RTC_VER 0x2c /* Valid Entry Register */ #define AT91_RTC_NVTIM (1 << 0) /* Non valid Time */ -- cgit v1.2.1 From ff802e31b5e60a9a39f70479947a27cea5da701c Mon Sep 17 00:00:00 2001 From: Mike Marciniszyn Date: Fri, 5 Apr 2013 14:30:13 -0400 Subject: firmware,IB/qib: revert firmware file move Commit e2eed58b4fbf ("IB/qib: change QLogic to Intel") moved a firmware file potentially breaking the ABI. This patch reverts that aspect of the fix as well as reverting the firmware name as used in qib. Reported-by: David Woodhouse Signed-off-by: Mike Marciniszyn Signed-off-by: Linus Torvalds --- drivers/infiniband/hw/qib/qib_sd7220.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/infiniband/hw/qib/qib_sd7220.c b/drivers/infiniband/hw/qib/qib_sd7220.c index 08a6c6d39e56..911205d3d5a0 100644 --- a/drivers/infiniband/hw/qib/qib_sd7220.c +++ b/drivers/infiniband/hw/qib/qib_sd7220.c @@ -44,7 +44,7 @@ #include "qib.h" #include "qib_7220.h" -#define SD7220_FW_NAME "intel/sd7220.fw" +#define SD7220_FW_NAME "qlogic/sd7220.fw" MODULE_FIRMWARE(SD7220_FW_NAME); /* -- cgit v1.2.1 From 61fc41317666be400802ac793f47de816ef7bd57 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Mon, 19 Nov 2012 17:23:13 +0100 Subject: reset: Add reset controller API This adds a simple API for devices to request being reset by separate reset controller hardware and implements the reset signal device tree binding. Signed-off-by: Philipp Zabel Reviewed-by: Stephen Warren Reviewed-by: Shawn Guo Reviewed-by: Marek Vasut Reviewed-by: Pavel Machek --- drivers/Kconfig | 2 + drivers/Makefile | 3 + drivers/reset/Kconfig | 13 +++ drivers/reset/Makefile | 1 + drivers/reset/core.c | 297 +++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 316 insertions(+) create mode 100644 drivers/reset/Kconfig create mode 100644 drivers/reset/Makefile create mode 100644 drivers/reset/core.c (limited to 'drivers') diff --git a/drivers/Kconfig b/drivers/Kconfig index 202fa6d051b9..847f8e31f3dd 100644 --- a/drivers/Kconfig +++ b/drivers/Kconfig @@ -162,4 +162,6 @@ source "drivers/irqchip/Kconfig" source "drivers/ipack/Kconfig" +source "drivers/reset/Kconfig" + endmenu diff --git a/drivers/Makefile b/drivers/Makefile index dce39a95fa71..1a64c4cd9094 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -37,6 +37,9 @@ obj-$(CONFIG_XEN) += xen/ # regulators early, since some subsystems rely on them to initialize obj-$(CONFIG_REGULATOR) += regulator/ +# reset controllers early, since gpu drivers might rely on them to initialize +obj-$(CONFIG_RESET_CONTROLLER) += reset/ + # tty/ comes before char/ so that the VT console is the boot-time # default. obj-y += tty/ diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig new file mode 100644 index 000000000000..c9d04f797862 --- /dev/null +++ b/drivers/reset/Kconfig @@ -0,0 +1,13 @@ +config ARCH_HAS_RESET_CONTROLLER + bool + +menuconfig RESET_CONTROLLER + bool "Reset Controller Support" + default y if ARCH_HAS_RESET_CONTROLLER + help + Generic Reset Controller support. + + This framework is designed to abstract reset handling of devices + via GPIOs or SoC-internal reset controller modules. + + If unsure, say no. diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile new file mode 100644 index 000000000000..1e2d83f2b995 --- /dev/null +++ b/drivers/reset/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_RESET_CONTROLLER) += core.o diff --git a/drivers/reset/core.c b/drivers/reset/core.c new file mode 100644 index 000000000000..a258277959b4 --- /dev/null +++ b/drivers/reset/core.c @@ -0,0 +1,297 @@ +/* + * Reset Controller framework + * + * Copyright 2013 Philipp Zabel, Pengutronix + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static DEFINE_MUTEX(reset_controller_list_mutex); +static LIST_HEAD(reset_controller_list); + +/** + * struct reset_control - a reset control + * @rcdev: a pointer to the reset controller device + * this reset control belongs to + * @id: ID of the reset controller in the reset + * controller device + */ +struct reset_control { + struct reset_controller_dev *rcdev; + struct device *dev; + unsigned int id; +}; + +/** + * of_reset_simple_xlate - translate reset_spec to the reset line number + * @rcdev: a pointer to the reset controller device + * @reset_spec: reset line specifier as found in the device tree + * @flags: a flags pointer to fill in (optional) + * + * This simple translation function should be used for reset controllers + * with 1:1 mapping, where reset lines can be indexed by number without gaps. + */ +int of_reset_simple_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + if (WARN_ON(reset_spec->args_count != rcdev->of_reset_n_cells)) + return -EINVAL; + + if (reset_spec->args[0] >= rcdev->nr_resets) + return -EINVAL; + + return reset_spec->args[0]; +} +EXPORT_SYMBOL_GPL(of_reset_simple_xlate); + +/** + * reset_controller_register - register a reset controller device + * @rcdev: a pointer to the initialized reset controller device + */ +int reset_controller_register(struct reset_controller_dev *rcdev) +{ + if (!rcdev->of_xlate) { + rcdev->of_reset_n_cells = 1; + rcdev->of_xlate = of_reset_simple_xlate; + } + + mutex_lock(&reset_controller_list_mutex); + list_add(&rcdev->list, &reset_controller_list); + mutex_unlock(&reset_controller_list_mutex); + + return 0; +} +EXPORT_SYMBOL_GPL(reset_controller_register); + +/** + * reset_controller_unregister - unregister a reset controller device + * @rcdev: a pointer to the reset controller device + */ +void reset_controller_unregister(struct reset_controller_dev *rcdev) +{ + mutex_lock(&reset_controller_list_mutex); + list_del(&rcdev->list); + mutex_unlock(&reset_controller_list_mutex); +} +EXPORT_SYMBOL_GPL(reset_controller_unregister); + +/** + * reset_control_reset - reset the controlled device + * @rstc: reset controller + */ +int reset_control_reset(struct reset_control *rstc) +{ + if (rstc->rcdev->ops->reset) + return rstc->rcdev->ops->reset(rstc->rcdev, rstc->id); + + return -ENOSYS; +} +EXPORT_SYMBOL_GPL(reset_control_reset); + +/** + * reset_control_assert - asserts the reset line + * @rstc: reset controller + */ +int reset_control_assert(struct reset_control *rstc) +{ + if (rstc->rcdev->ops->assert) + return rstc->rcdev->ops->assert(rstc->rcdev, rstc->id); + + return -ENOSYS; +} +EXPORT_SYMBOL_GPL(reset_control_assert); + +/** + * reset_control_deassert - deasserts the reset line + * @rstc: reset controller + */ +int reset_control_deassert(struct reset_control *rstc) +{ + if (rstc->rcdev->ops->deassert) + return rstc->rcdev->ops->deassert(rstc->rcdev, rstc->id); + + return -ENOSYS; +} +EXPORT_SYMBOL_GPL(reset_control_deassert); + +/** + * reset_control_get - Lookup and obtain a reference to a reset controller. + * @dev: device to be reset by the controller + * @id: reset line name + * + * Returns a struct reset_control or IS_ERR() condition containing errno. + * + * Use of id names is optional. + */ +struct reset_control *reset_control_get(struct device *dev, const char *id) +{ + struct reset_control *rstc = ERR_PTR(-EPROBE_DEFER); + struct reset_controller_dev *r, *rcdev; + struct of_phandle_args args; + int index = 0; + int rstc_id; + int ret; + + if (!dev) + return ERR_PTR(-EINVAL); + + if (id) + index = of_property_match_string(dev->of_node, + "reset-names", id); + ret = of_parse_phandle_with_args(dev->of_node, "resets", "#reset-cells", + index, &args); + if (ret) + return ERR_PTR(ret); + + mutex_lock(&reset_controller_list_mutex); + rcdev = NULL; + list_for_each_entry(r, &reset_controller_list, list) { + if (args.np == r->of_node) { + rcdev = r; + break; + } + } + of_node_put(args.np); + + if (!rcdev) { + mutex_unlock(&reset_controller_list_mutex); + return ERR_PTR(-ENODEV); + } + + rstc_id = rcdev->of_xlate(rcdev, &args); + if (rstc_id < 0) { + mutex_unlock(&reset_controller_list_mutex); + return ERR_PTR(rstc_id); + } + + try_module_get(rcdev->owner); + mutex_unlock(&reset_controller_list_mutex); + + rstc = kzalloc(sizeof(*rstc), GFP_KERNEL); + if (!rstc) { + module_put(rstc->rcdev->owner); + return ERR_PTR(-ENOMEM); + } + + rstc->dev = dev; + rstc->rcdev = rcdev; + rstc->id = rstc_id; + + return rstc; +} +EXPORT_SYMBOL_GPL(reset_control_get); + +/** + * reset_control_put - free the reset controller + * @rstc: reset controller + */ + +void reset_control_put(struct reset_control *rstc) +{ + if (IS_ERR(rstc)) + return; + + module_put(rstc->rcdev->owner); + kfree(rstc); +} +EXPORT_SYMBOL_GPL(reset_control_put); + +static void devm_reset_control_release(struct device *dev, void *res) +{ + reset_control_put(*(struct reset_control **)res); +} + +/** + * devm_reset_control_get - resource managed reset_control_get() + * @dev: device to be reset by the controller + * @id: reset line name + * + * Managed reset_control_get(). For reset controllers returned from this + * function, reset_control_put() is called automatically on driver detach. + * See reset_control_get() for more information. + */ +struct reset_control *devm_reset_control_get(struct device *dev, const char *id) +{ + struct reset_control **ptr, *rstc; + + ptr = devres_alloc(devm_reset_control_release, sizeof(*ptr), + GFP_KERNEL); + if (!ptr) + return ERR_PTR(-ENOMEM); + + rstc = reset_control_get(dev, id); + if (!IS_ERR(rstc)) { + *ptr = rstc; + devres_add(dev, ptr); + } else { + devres_free(ptr); + } + + return rstc; +} +EXPORT_SYMBOL_GPL(devm_reset_control_get); + +static int devm_reset_control_match(struct device *dev, void *res, void *data) +{ + struct reset_control **rstc = res; + if (WARN_ON(!rstc || !*rstc)) + return 0; + return *rstc == data; +} + +/** + * devm_reset_control_put - resource managed reset_control_put() + * @rstc: reset controller to free + * + * Deallocate a reset control allocated withd devm_reset_control_get(). + * This function will not need to be called normally, as devres will take + * care of freeing the resource. + */ +void devm_reset_control_put(struct reset_control *rstc) +{ + int ret; + + ret = devres_release(rstc->dev, devm_reset_control_release, + devm_reset_control_match, rstc); + if (ret) + WARN_ON(ret); +} +EXPORT_SYMBOL_GPL(devm_reset_control_put); + +/** + * device_reset - find reset controller associated with the device + * and perform reset + * @dev: device to be reset by the controller + * + * Convenience wrapper for reset_control_get() and reset_control_reset(). + * This is useful for the common case of devices with single, dedicated reset + * lines. + */ +int device_reset(struct device *dev) +{ + struct reset_control *rstc; + int ret; + + rstc = reset_control_get(dev, NULL); + if (IS_ERR(rstc)) + return PTR_ERR(rstc); + + ret = reset_control_reset(rstc); + + reset_control_put(rstc); + + return ret; +} +EXPORT_SYMBOL_GPL(device_reset); -- cgit v1.2.1 From 6034bb22d8387708075c083385e5d2e1072a4f33 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 3 Apr 2013 08:02:53 +0300 Subject: reset: NULL deref on allocation failure "rstc" is NULL here and we should use "rcdev" instead of "rstc->rcdev". Signed-off-by: Dan Carpenter Signed-off-by: Philipp Zabel --- drivers/reset/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers') diff --git a/drivers/reset/core.c b/drivers/reset/core.c index a258277959b4..d1b6089a0ef8 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -181,7 +181,7 @@ struct reset_control *reset_control_get(struct device *dev, const char *id) rstc = kzalloc(sizeof(*rstc), GFP_KERNEL); if (!rstc) { - module_put(rstc->rcdev->owner); + module_put(rcdev->owner); return ERR_PTR(-ENOMEM); } -- cgit v1.2.1 From 6c64155de972e8c42750340c21e225a2f8b78f26 Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Thu, 28 Mar 2013 17:35:21 +0100 Subject: staging: drm/imx: Use SRC to reset IPU Request the System Reset Controller to reset the IPU if specified via device tree phandle. Signed-off-by: Philipp Zabel Reviewed-by: Stephen Warren Reviewed-by: Marek Vasut Reviewed-by: Pavel Machek Acked-by: Greg Kroah-Hartman Signed-off-by: Shawn Guo --- drivers/staging/imx-drm/ipu-v3/ipu-common.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c b/drivers/staging/imx-drm/ipu-v3/ipu-common.c index 366f259e3756..04b8320d6579 100644 --- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c +++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -660,7 +661,7 @@ int ipu_idmac_disable_channel(struct ipuv3_channel *channel) } EXPORT_SYMBOL_GPL(ipu_idmac_disable_channel); -static int ipu_reset(struct ipu_soc *ipu) +static int ipu_memory_reset(struct ipu_soc *ipu) { unsigned long timeout; @@ -1104,7 +1105,12 @@ static int ipu_probe(struct platform_device *pdev) if (ret) goto out_failed_irq; - ret = ipu_reset(ipu); + ret = device_reset(&pdev->dev); + if (ret) { + dev_err(&pdev->dev, "failed to reset: %d\n", ret); + goto out_failed_reset; + } + ret = ipu_memory_reset(ipu); if (ret) goto out_failed_reset; @@ -1130,8 +1136,8 @@ static int ipu_probe(struct platform_device *pdev) failed_add_clients: ipu_submodules_exit(ipu); failed_submodules_init: - ipu_irq_exit(ipu); out_failed_reset: + ipu_irq_exit(ipu); out_failed_irq: clk_disable_unprepare(ipu->clk); failed_clk_get: -- cgit v1.2.1