This patchset fixes two +1 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 --- Changes in v5: - Move set handle to the entity_commit - Replace uvc_ctrl_set_handle with get/put_handle. - Add a patch to flush the cache of async controls. - Link to v4: https://lore.kernel.org/r/20241129-uvc-fix-async-v4-0-f23784dba80f@chromium....
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....
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....
--- Ricardo Ribalda (5): media: uvcvideo: Only save async fh if success media: uvcvideo: Remove dangling pointers media: uvcvideo: Annotate lock requirements for uvc_ctrl_set media: uvcvideo: Remove redundant NULL assignment media: uvcvideo: Flush the control cache when we get an event
drivers/media/usb/uvc/uvc_ctrl.c | 77 ++++++++++++++++++++++++++++++++++------ drivers/media/usb/uvc/uvc_v4l2.c | 2 ++ drivers/media/usb/uvc/uvcvideo.h | 9 ++++- 3 files changed, 76 insertions(+), 12 deletions(-) --- base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37 change-id: 20241127-uvc-fix-async-2c9d40413ad8
Best regards,