blackbird-op-linux/drivers/uio, branch master

uio: uio_pdrv_genirq: Do not log an error when deferring probe routine.

2020-01-14T14:27:51+00:00

When deferring the probe routine just return without displaying an error. Signed-off-by: Oscar Ravadilla Link: https://lore.kernel.org/r/20200108001648.2949-1-oscar.ravadilla@alliedtelesis.co.nz Signed-off-by: Greg Kroah-Hartman

uio: fix a sleep-in-atomic-context bug in uio_dmem_genirq_irqcontrol()

2020-01-14T14:27:51+00:00

The driver may sleep while holding a spinlock. The function call path (from bottom to top) in Linux 4.19 is: kernel/irq/manage.c, 523: synchronize_irq in disable_irq drivers/uio/uio_dmem_genirq.c, 140: disable_irq in uio_dmem_genirq_irqcontrol drivers/uio/uio_dmem_genirq.c, 134: _raw_spin_lock_irqsave in uio_dmem_genirq_irqcontrol synchronize_irq() can sleep at runtime. To fix this bug, disable_irq() is called without holding the spinlock. This bug is found by a static analysis tool STCheck written by myself. Signed-off-by: Jia-Ju Bai Link: https://lore.kernel.org/r/20191218094405.6009-1-baijiaju1990@gmail.com Signed-off-by: Greg Kroah-Hartman

uio: fix irq init with dt support & irq not defined

2019-11-14T03:49:48+00:00

This change also does a bit of a unification for the IRQ init code. But the actual problem is that UIO_IRQ_NONE == 0, so for the DT case where UIO_IRQ_NONE gets assigned to `uioinfo->irq`, a 2nd initialization will get triggered (for the IRQ) and this one will exit via `goto bad1`. As far as things seem to go, the only case where UIO_IRQ_NONE seems valid, is when using a device-tree. The driver has some legacy support for old platform_data structures. It looks like, for platform_data a non-existent IRQ is an invalid case (or was considered an invalid case). Which is why -ENXIO is treated only when a DT is used. Signed-off-by: Dragos Bogdan Signed-off-by: Alexandru Ardelean Acked-by: Damian Hobson-Garcia Link: https://lore.kernel.org/r/20191105073212.16719-1-alexandru.ardelean@analog.com Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2019-09-18T18:14:31+00:00

Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver pull request for 5.4-rc1. As has been happening in previous releases, more and more individual driver subsystem trees are ending up in here. Now if that is good or bad I can't tell, but hopefully it makes your life easier as it's more of an aggregation of trees together to one merge point for you. Anyway, lots of stuff in here: - habanalabs driver updates - thunderbolt driver updates - misc driver updates - coresight and intel_th hwtracing driver updates - fpga driver updates - extcon driver updates - some dma driver updates - char driver updates - android binder driver updates - nvmem driver updates - phy driver updates - parport driver fixes - pcmcia driver fix - uio driver updates - w1 driver updates - configfs fixes - other assorted driver updates All of these have been in linux-next for a long time with no reported issues" * tag 'char-misc-5.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (200 commits) misc: mic: Use PTR_ERR_OR_ZERO rather than its implementation habanalabs: correctly cast variable to __le32 habanalabs: show correct id in error print habanalabs: stop using the acronym KMD habanalabs: display card name as sensors header habanalabs: add uapi to retrieve aggregate H/W events habanalabs: add uapi to retrieve device utilization habanalabs: Make the Coresight timestamp perpetual habanalabs: explicitly set the queue-id enumerated numbers habanalabs: print to kernel log when reset is finished habanalabs: replace __le32_to_cpu with le32_to_cpu habanalabs: replace __cpu_to_le32/64 with cpu_to_le32/64 habanalabs: Handle HW_IP_INFO if device disabled or in reset habanalabs: Expose devices after initialization is done habanalabs: improve security in Debug IOCTL habanalabs: use default structure for user input in Debug IOCTL habanalabs: Add descriptive name to PSOC app status register habanalabs: Add descriptive names to PSOC scratch-pad registers habanalabs: create two char devices per ASIC habanalabs: change device_setup_cdev() to be more generic ...

uio: uio_pdrv_genirq: Make UIO name controllable via DT node property

2019-09-04T11:42:43+00:00

When probed via DT, the uio_pdrv_genirq driver currently uses the name of the node and exposes that as name of the UIO device to userspace. This doesn't work for systems where multiple nodes with the same name (but different unit addresses) are present, or for systems where the node names are auto-generated by a third-party tool. This patch adds the possibility to read the UIO name from the optional "linux,uio-name" property. Signed-off-by: Daniel Mack Link: https://lore.kernel.org/r/20190815212807.25058-1-daniel@zonque.org Signed-off-by: Greg Kroah-Hartman

uio: uio_fsl_elbc_gpcm: convert platform driver to use dev_groups

2019-08-02T10:56:51+00:00

Platform drivers now have the option to have the platform core create and remove any needed sysfs attribute files. So take advantage of that and do not register "by hand" a sysfs group of attributes. Link: https://lore.kernel.org/r/20190731124349.4474-3-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman

uio: Remove dev_err() usage after platform_get_irq()

2019-07-30T18:32:11+00:00

We don't need dev_err() messages when platform_get_irq() fails now that platform_get_irq() prints an error message itself when something goes wrong. Let's remove these prints with a simple semantic patch. // @@ expression ret; struct platform_device *E; @@ ret = ( platform_get_irq(E, ...) | platform_get_irq_byname(E, ...) ); if ( \( ret < 0 \| ret <= 0 \) ) { ( -if (ret != -EPROBE_DEFER) -{ ... -dev_err(...); -... } | ... -dev_err(...); ) ... } // While we're here, remove braces on if statements that only have one statement (manually). Cc: Greg Kroah-Hartman Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20190730181557.90391-46-swboyd@chromium.org Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation # extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 4122 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Enrico Weigelt Reviewed-by: Kate Stewart Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333

2019-06-05T15:37:06+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license version 2 as published by the free software foundation this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 136 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Alexios Zavras Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190530000436.384967451@linutronix.de Signed-off-by: Greg Kroah-Hartman

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

2019-05-24T15:36:45+00:00

Based on 1 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Michael Ellerman (powerpc) Reviewed-by: Richard Fontana Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman