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>
git-mirror · Dec 5, 2009 · f4eabaf · f4eabaf
1 parent ebbb5c3
commit f4eabaf
Showing 1 changed file with 7 additions and 0 deletions.
diff --git 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;
 	}