Hans discovered a bug in the error handling of uvc_ctrl_commit(), lets fix it. It has been tested with v4l2-compliance -d /dev/video0 Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> --- Changes in v2: - Fix commit message (Thanks Laurent). - Change logic for err_ctrl. It looks nicer now. - Link to v1: https://lore.kernel.org/r/20241210-uvc-data-backup-v1-0-77141e439cc3@xxxxxxxxxxxx --- Ricardo Ribalda (3): media: uvcvideo: Return the number of processed controls media: uvcvideo: Send control events for partial succeeds media: uvcvideo: Rollback non processed entities on error drivers/media/usb/uvc/uvc_ctrl.c | 53 ++++++++++++++++++++++++++++++---------- 1 file changed, 40 insertions(+), 13 deletions(-) --- base-commit: c2b96a6818159fba8a3bcc38262da9e77f9b3ec7 change-id: 20241210-uvc-data-backup-a0a76df9aee9 Best regards, -- Ricardo Ribalda <ribalda@xxxxxxxxxxxx>