[media] v4l: ctrls: Move control lock/unlock above the control access functions

The v4l2_ctrl_{,un}lock will be needed elsewhere. Define them before the
functions that perform operations on controls.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

include/media/v4l2-ctrls.h

@@ -367,6 +367,24 @@ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
   */
 void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl);
 
+/** v4l2_ctrl_lock() - Helper function to lock the handler
+  * associated with the control.
+  * @ctrl:	The control to lock.
+  */
+static inline void v4l2_ctrl_lock(struct v4l2_ctrl *ctrl)
+{
+	mutex_lock(ctrl->handler->lock);
+}
+
+/** v4l2_ctrl_unlock() - Helper function to unlock the handler
+  * associated with the control.
+  * @ctrl:	The control to unlock.
+  */
+static inline void v4l2_ctrl_unlock(struct v4l2_ctrl *ctrl)
+{
+	mutex_unlock(ctrl->handler->lock);
+}
+
 /** v4l2_ctrl_handler_setup() - Call the s_ctrl op for all controls belonging
   * to the handler to initialize the hardware to the current control values.
   * @hdl:	The control handler.
@@ -622,24 +640,6 @@ void v4l2_ctrl_grab(struct v4l2_ctrl *ctrl, bool grabbed);
 int v4l2_ctrl_modify_range(struct v4l2_ctrl *ctrl,
 			s64 min, s64 max, u64 step, s64 def);
 
-/** v4l2_ctrl_lock() - Helper function to lock the handler
-  * associated with the control.
-  * @ctrl:	The control to lock.
-  */
-static inline void v4l2_ctrl_lock(struct v4l2_ctrl *ctrl)
-{
-	mutex_lock(ctrl->handler->lock);
-}
-
-/** v4l2_ctrl_unlock() - Helper function to unlock the handler
-  * associated with the control.
-  * @ctrl:	The control to unlock.
-  */
-static inline void v4l2_ctrl_unlock(struct v4l2_ctrl *ctrl)
-{
-	mutex_unlock(ctrl->handler->lock);
-}
-
 /** v4l2_ctrl_notify() - Function to set a notify callback for a control.
   * @ctrl:	The control.
   * @notify:	The callback function.