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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2009-08-06 13:05:40 +0400
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-05 23:40:34 +0300
commitf4eabafeb3ea41801260fba624cbf2da971d19f8 (patch)
treea5925d9212e3f190591c4063f785fc36359da8bb /drivers/media/video/uvc/uvc_ctrl.c
parentebbb5c3e0eb73db4da5bee57cd0344a74cf73319 (diff)
downloadlinux-f4eabafeb3ea41801260fba624cbf2da971d19f8.tar.xz
V4L/DVB (13148): uvcvideo: Handle V4L2_CTRL_TYPE_BUTTON control type in VIDIOC_QUERYCTRL
Return minimum, maximum and step set to 0 without querying the hardware. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc/uvc_ctrl.c')
-rw-r--r--drivers/media/video/uvc/uvc_ctrl.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/media/video/uvc/uvc_ctrl.c b/drivers/media/video/uvc/uvc_ctrl.c
index 1b89735e62fd..6f1487fc3d7c 100644
--- a/drivers/media/video/uvc/uvc_ctrl.c
+++ b/drivers/media/video/uvc/uvc_ctrl.c
@@ -826,6 +826,13 @@ int uvc_query_v4l2_ctrl(struct uvc_video_chain *chain,
ret = 0;
goto out;
+ case V4L2_CTRL_TYPE_BUTTON:
+ v4l2_ctrl->minimum = 0;
+ v4l2_ctrl->maximum = 0;
+ v4l2_ctrl->step = 0;
+ ret = 0;
+ goto out;
+
default:
break;
}