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3d37ef41be
linux/drivers/media/pci
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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
..
b2c2 media: flexcop: avoid -Wempty-body warning 2021-04-09 13:05:01 +02:00
bt8xx media: drivers/media/pci/bt8xx/bttv-cards: fix typos 2021-04-06 10:35:28 +02:00
cobalt media: cobalt: fix race condition in setting HPD 2021-05-19 09:51:39 +02:00
cx18 media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
cx88 media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
cx23885 media: cx23885: switch from 'pci_' to 'dma_' API 2021-04-06 16:07:10 +02:00
cx25821 media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
ddbridge treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dm1105 media: dm1105: switch from 'pci_' to 'dma_' API 2020-11-27 14:10:07 +01:00
dt3155 media: media/pci: use vb2_video_unregister_device() 2020-08-28 15:01:54 +02:00
intel media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
ivtv media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
mantis media: mantis: remove orphan mantis_core.c 2021-03-22 17:27:13 +01:00
meye treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
netup_unidvb media: netup_unidvb: Don't leak SPI master in probe error path 2020-12-07 14:18:57 +00:00
ngene media: ngene: switch from 'pci_' to 'dma_' API 2021-03-11 11:59:46 +01:00
pluto2 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
pt1 media: media/pci/pt1: Assign value when defining variables 2021-03-22 13:04:05 +01:00
pt3 media: pci: Use dev_get_drvdata where possible 2019-07-25 06:45:10 -04:00
saa7134 media: saa7134: use sg_dma_len when building pgtable 2021-03-11 11:59:44 +01:00
saa7146 media: saa7146: fix array overflow in vidioc_s_audio() 2020-12-03 07:46:34 +01:00
saa7164 media: pci: saa7164: Rudimentary spelling fixes in the file saa7164-types.h 2021-03-22 11:57:37 +01:00
smipcie media: smipcie: fix interrupt handling and IR timeout 2021-02-05 23:41:25 +01:00
solo6x10 media: solo6x10: Switch to using the new API kobj_to_dev() 2021-03-11 11:59:43 +01:00
sta2x11 media updates for v5.13-rc1 2021-04-28 09:24:36 -07:00
ttpci Networking updates for 5.11 2020-12-15 13:22:29 -08:00
tw68 media: tw68: switch from 'pci_' to 'dma_' API 2021-04-06 16:07:42 +02:00
tw686x media: tw686x: switch from 'pci_' to 'dma_' API 2021-04-06 16:07:26 +02:00
tw5864 media: tw5864: check status of tw5864_frameinterval_get 2020-08-29 08:16:16 +02:00
Kconfig Revert "media: Kconfig: better support hybrid TV devices" 2020-04-14 11:00:30 +02:00
Makefile