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[v4,0/4] media: uvcvideo: Two fixes for async controls

Message ID 20241129-uvc-fix-async-v4-0-f23784dba80f@chromium.org (mailing list archive)
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Series media: uvcvideo: Two fixes for async controls | expand

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Ricardo Ribalda Nov. 29, 2024, 9:30 p.m. UTC 
This patchset fixes two bugs with the async controls for the uvc driver.

They were found while implementing the granular PM, but I am sending
them as a separate patches, so they can be reviewed sooner. They fix
real issues in the driver that need to be taken care.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
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Changes in v4:
- Fix implementation of uvc_ctrl_set_handle.
- Link to v3: https://lore.kernel.org/r/20241129-uvc-fix-async-v3-0-ab675ce66db7@chromium.org

Changes in v3:
- change again! order of patches.
- Introduce uvc_ctrl_set_handle.
- Do not change ctrl->handle if it is not NULL.

Changes in v2:
- Annotate lockdep
- ctrl->handle != handle
- Change order of patches
- Move documentation of mutex
- Link to v1: https://lore.kernel.org/r/20241127-uvc-fix-async-v1-0-eb8722531b8c@chromium.org

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Ricardo Ribalda (4):
      media: uvcvideo: Do not replace the handler of an async ctrl
      media: uvcvideo: Remove dangling pointers
      media: uvcvideo: Annotate lock requirements for uvc_ctrl_set
      media: uvcvideo: Remove redundant NULL assignment

 drivers/media/usb/uvc/uvc_ctrl.c | 62 ++++++++++++++++++++++++++++++++++++----
 drivers/media/usb/uvc/uvc_v4l2.c |  2 ++
 drivers/media/usb/uvc/uvcvideo.h | 14 +++++++--
 3 files changed, 70 insertions(+), 8 deletions(-)
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base-commit: 72ad4ff638047bbbdf3232178fea4bec1f429319
change-id: 20241127-uvc-fix-async-2c9d40413ad8

Best regards,