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| author | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2012-05-11 09:55:59 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-20 10:41:18 -0300 |
| commit | 6b363f9f97af10767e72a04c2a5cabfc32133cc4 (patch) | |
| tree | 32d455374f612d6f7b9416678c199733b11117cf /drivers/media/dvb/dvb-usb/technisat-usb2.c | |
| parent | e2b710bfde37dcc5e5c55fe09e640c1a218a81a2 (diff) | |
| download | blackbird-obmc-linux-6b363f9f97af10767e72a04c2a5cabfc32133cc4.tar.gz blackbird-obmc-linux-6b363f9f97af10767e72a04c2a5cabfc32133cc4.zip | |
[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>
Diffstat (limited to 'drivers/media/dvb/dvb-usb/technisat-usb2.c')
0 files changed, 0 insertions, 0 deletions
