[media] v4l2-mem2mem: export v4l2_m2m_try_schedule

Some drivers might allow to decode remaining frames from an internal ringbuffer
after a decoder stop command. Allow those to call v4l2_m2m_try_schedule
directly.
Signed-off-by: Michael Olbrich <m.olbrich@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/v4l2-core/v4l2-mem2mem.c

@@ -208,7 +208,7 @@ static void v4l2_m2m_try_run(struct v4l2_m2m_dev *m2m_dev)
  * An example of the above could be an instance that requires more than one
  * src/dst buffer per transaction.
  */
-static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
+void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
 {
 	struct v4l2_m2m_dev *m2m_dev;
 	unsigned long flags_job, flags_out, flags_cap;
@@ -274,6 +274,7 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
 
 	v4l2_m2m_try_run(m2m_dev);
 }
+EXPORT_SYMBOL_GPL(v4l2_m2m_try_schedule);
 
 /**
  * v4l2_m2m_cancel_job() - cancel pending jobs for the context

include/media/v4l2-mem2mem.h

@@ -95,6 +95,8 @@ void *v4l2_m2m_get_curr_priv(struct v4l2_m2m_dev *m2m_dev);
 struct vb2_queue *v4l2_m2m_get_vq(struct v4l2_m2m_ctx *m2m_ctx,
 				       enum v4l2_buf_type type);
 
+void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx);
+
 void v4l2_m2m_job_finish(struct v4l2_m2m_dev *m2m_dev,
 			 struct v4l2_m2m_ctx *m2m_ctx);