V4L/DVB (12725): v4l: warn when desired devnodenr is in use & add _no_warn function
Warn when the desired device node number is already in use, except when
the new video_register_device_no_warn function is called since in some
use-cases that warning is not relevant.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
index 255f644..73c9867 100644
--- a/include/media/v4l2-dev.h
+++ b/include/media/v4l2-dev.h
@@ -101,6 +101,10 @@
Also note that vdev->minor is set to -1 if the registration failed. */
int __must_check video_register_device(struct video_device *vdev, int type, int nr);
+/* Same as video_register_device, but no warning is issued if the desired
+ device node number was already in use. */
+int __must_check video_register_device_no_warn(struct video_device *vdev, int type, int nr);
+
/* Unregister video devices. Will do nothing if vdev == NULL or
vdev->minor < 0. */
void video_unregister_device(struct video_device *vdev);