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V4L/DVB (13148): uvcvideo: Handle V4L2_CTRL_TYPE_BUTTON control type in VIDIOC_QUERYCTRL

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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>
This commit is contained in:
Laurent Pinchart 2009-08-06 06:05:40 -03:00 committed by Mauro Carvalho Chehab
parent ebbb5c3e0e
commit f4eabafeb3
1 changed files with 7 additions and 0 deletions
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7
drivers/media/video/uvc/uvc_ctrl.c
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@ -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;
}