V4L/DVB (11021): v4l2-device: add a notify callback.

[safe/jmp/linux-2.6] / include / media / v4l2-subdev.h

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index 05b6965..1b97a2c 100644 (file)
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -191,4 +191,9 @@ static inline void v4l2_subdev_init(struct v4l2_subdev *sd,
        (!(sd) ? -ENODEV : (((sd) && (sd)->ops->o && (sd)->ops->o->f) ? \
                (sd)->ops->o->f((sd) , ##args) : -ENOIOCTLCMD))
 
+/* Send a notification to v4l2_device. */
+#define v4l2_subdev_notify(sd, notification, arg)                         \
+       ((!(sd) || !(sd)->v4l2_dev || !(sd)->v4l2_dev->notify) ? -ENODEV : \
+        (sd)->v4l2_dev->notify((sd), (notification), (arg)))
+
 #endif