talos-obmc-linux/drivers/spi, branch dev-4.13

spi: armada-3700: Fix failing commands with quad-SPI

2017-11-02T08:54:46+00:00

commit 747e1f60470b975363cbbfcde0c41a3166391be5 upstream. A3700 SPI controller datasheet states that only the first line (IO0) is used to receive and send instructions, addresses and dummy bytes, unless for addresses during an RX operation in a quad SPI configuration (see p.821 of the Armada-3720-DB datasheet). Otherwise, some commands such as SPI NOR commands like READ_FROM_CACHE_DUAL_IO(0xeb) and READ_FROM_CACHE_DUAL_IO(0xbb) will fail because these commands must send address bytes through the four pins. Data transfer always use the four bytes with this setup. Thus, in quad SPI configuration, the A3700_SPI_ADDR_PIN bit must be set only in this case to inform the controller that it must use the number of pins indicated in the {A3700_SPI_DATA_PIN1,A3700_SPI_DATA_PIN0} field during the address cycles of an RX operation. Suggested-by: Ken Ma Signed-off-by: Miquel Raynal Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

spi: bcm-qspi: Fix use after free in bcm_qspi_probe() in error path

2017-11-02T08:54:46+00:00

commit c0368e4db4a3e8a3dce40f3f621c06e14c560d79 upstream. There was an inversion in how the error path in bcm_qspi_probe() is done which would make us trip over a KASAN use-after-free report. Turns out that qspi->dev_ids does not get allocated until later in the probe process. Fix this by introducing a new lable: qspi_resource_err which takes care of cleaning up the SPI master instance. Fixes: fa236a7ef240 ("spi: bcm-qspi: Add Broadcom MSPI driver") Signed-off-by: Florian Fainelli Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

spi: a3700: Return correct value on timeout detection

2017-11-02T08:54:46+00:00

commit 5a866ec0014b2baa4ecbb1eaa19c835482829d08 upstream. When waiting for transfer completion, a3700_spi_wait_completion returns a boolean indicating if a timeout occurred. The function was returning 'true' everytime, failing to detect any timeout. This patch makes it return 'false' when a timeout is reached. Signed-off-by: Maxime Chevallier Signed-off-by: Mark Brown Signed-off-by: Greg Kroah-Hartman

Merge branch 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2017-07-08T17:41:53+00:00

Pull spi uaccess delousing from Al Viro: "Getting rid of pointless __get_user() and friends in drivers/spi. [ the only reason it's on a separate branch is that I hoped it would be picked by spi folks; looks like mail asking them to grab it got lost and I hadn't followed up on that ]" * 'for-spi' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: spidev: quit messing with access_ok()

Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/st-ssc4' and 'spi/topic/stm32' into spi-next

2017-07-03T15:21:12+00:00

Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/rockchip', 'spi/topic/sh-msiof' and 'spi/topic/sirf' into spi-next

2017-07-03T15:21:10+00:00

Merge remote-tracking branches 'spi/topic/loopback', 'spi/topic/meson-spicc', 'spi/topic/mtk' and 'spi/topic/omap2-mcspi' into spi-next

2017-07-03T15:21:08+00:00

Merge remote-tracking branches 'spi/topic/atmel', 'spi/topic/bcm63xx', 'spi/topic/davinci' and 'spi/topic/imx' into spi-next

2017-07-03T15:21:06+00:00

Merge remote-tracking branch 'spi/topic/master' into spi-next

2017-07-03T15:21:05+00:00

Merge remote-tracking branch 'spi/topic/core' into spi-next

2017-07-03T15:21:05+00:00