linux/drivers/media/video/uvc
Laurent Pinchart 6b363f9f97 [media] uvcvideo: Fix V4L2 button controls that share the same UVC control
The Logitech pan/tilt reset UVC control contains two V4L2 button
controls to reset pan and tilt. As the UVC control is not marked as
auto-update, the button bits are set but never reset. A pan reset that
follows a tilt reset would thus reset both pan and tilt.

Fix this by not caching the control value of write-only controls. All
standard UVC controls are either readable or auto-update, so this will
not cause any regression and will not result in extra USB requests.

Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-20 10:41:18 -03:00
..
Kconfig [media] uvcvideo: Use videobuf2-vmalloc 2011-12-11 11:13:06 -02:00
Makefile [media] uvcvideo: Add debugfs support 2011-12-11 11:22:07 -02:00
uvc_ctrl.c [media] uvcvideo: Fix V4L2 button controls that share the same UVC control 2012-05-20 10:41:18 -03:00
uvc_debugfs.c [media] uvcvideo: Extract video stream statistics 2011-12-11 11:22:08 -02:00
uvc_driver.c [media] uvcvideo: uvc_driver.c: use linux/atomic.h 2012-03-19 14:08:34 -03:00
uvc_entity.c [media] uvcvideo: Fix crash when linking entities 2011-09-21 22:18:07 -03:00
uvc_isight.c [media] uvcvideo: Move fields from uvc_buffer::buf to uvc_buffer 2011-12-11 11:12:05 -02:00
uvc_queue.c [media] uvcvideo: Use videobuf2 .get_unmapped_area() implementation 2012-05-08 13:46:19 -03:00
uvc_status.c [media] uvcvideo: Update e-mail address and copyright notices 2010-10-21 01:18:18 -02:00
uvc_v4l2.c [media] uvcvideo: Fix ENUMINPUT handling 2012-05-08 13:45:53 -03:00
uvc_video.c [media] uvcvideo: Fix race-related crash in uvc_video_clock_update() 2012-04-09 10:15:28 -03:00
uvcvideo.h [media] uvcvideo: Drop unused ctrl member from struct uvc_control_mapping 2012-05-07 16:41:57 -03:00