[PATCH v2 0/2] media: uvcvideo: Fix race condition on metadata buffers

[Ricardo Ribalda]

This series fixes a race condition when calling streamoff only on the
metada queue while streaming.

The first patch fixes the race condition and the second patch replaces a
busy wait with a waitqueue. It is probably overkilled and this is why it
is a follow-up patch.

Feel free to apply the first patch, both, or squash them into one patch.

Regards!!

Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
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Changes in v2:
- Use a new flag in_flight to avoid keeping the spinlock for long
  periods of time
- Link to v1: https://lore.kernel.org/r/20250714-uvc-racemeta-v1-1-360de2e15a9a@xxxxxxxxxxxx

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Ricardo Ribalda (2):
      media: uvcvideo: Fix race condition for meta buffer list
      media: uvcvideo: Use wait queue for metadata streamoff

 drivers/media/usb/uvc/uvc_queue.c | 11 +++++++++++
 drivers/media/usb/uvc/uvc_video.c | 32 +++++++++++++++++++++++++++++++-
 drivers/media/usb/uvc/uvcvideo.h  |  3 +++
 3 files changed, 45 insertions(+), 1 deletion(-)
---
base-commit: 253355887a1ab0ac8f33b356c7c1140eee554d18
change-id: 20250714-uvc-racemeta-fee2e69bbfcd

Best regards,
-- 
Ricardo Ribalda <ribalda@xxxxxxxxxxxx>