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linux/drivers/media/pci/cobalt
History
Hans Verkuil 3d37ef41be media: cobalt: fix race condition in setting HPD 
The cobalt_s_bit_sysctrl reads the old register value over PCI,
then changes a bit and sets writes the new value to the register.

This is used among other things for setting the HPD output pin.

But if the HPD is changed for multiple inputs at the same time,
then this causes a race condition where a stale value is read.

Serialize this function with a mutex.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-05-19 09:51:39 +02:00
..
cobalt-alsa-main.c media: use strscpy() instead of strlcpy() 2018-09-11 13:32:17 -04:00
cobalt-alsa-pcm.c media: cobalt: Drop superfluous ioctl PCM ops 2019-12-13 09:33:12 +01:00
cobalt-alsa-pcm.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-alsa.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-cpld.c media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-cpld.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-driver.c media: cobalt: fix race condition in setting HPD 2021-05-19 09:51:39 +02:00
cobalt-driver.h media: cobalt: fix race condition in setting HPD 2021-05-19 09:51:39 +02:00
cobalt-flash.c media: cobalt: remove redundant assignment to variable data 2019-07-23 08:52:13 -04:00
cobalt-flash.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-i2c.c media: pci: cobalt-i2c.c: fix comparison of 0/1 to bool variable 2020-08-29 08:04:01 +02:00
cobalt-i2c.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-irq.c media: cobalt: replace VB2_BUF_STATE_REQUEUEING by _ERROR 2019-03-19 13:50:38 -04:00
cobalt-irq.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-omnitek.c media: cobalt: cobalt-omnitek.c: fix comparison to bool 2020-08-29 07:47:23 +02:00
cobalt-omnitek.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
cobalt-v4l2.c media: media/pci: rename VFL_TYPE_GRABBER to _VIDEO 2020-02-24 16:53:50 +01:00
cobalt-v4l2.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
Kconfig media: Kconfig files: use select for V4L2 subdevs and MC 2020-04-14 10:29:05 +02:00
m00233_video_measure_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00235_fdma_packer_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00389_cvi_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00460_evcnt_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00473_freewheel_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00479_clk_loss_detector_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
m00514_syncgen_flow_evcnt_memmap_package.h media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00
Makefile media: cobalt: add SPDX license info 2018-02-14 13:15:33 -05:00