[PATCH v4 5/7] media: vsp1: Refactor vsp1_video_complete_buffer() for later reuse

[Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>]

The vsp1_video_complete_buffer() function completes the current buffer
and returns a pointer to the next buffer. Split the code that completes
the buffer to a separate function for later reuse, and rename
vsp1_video_complete_buffer() to vsp1_video_complete_next_buffer().

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
 drivers/media/platform/vsp1/vsp1_video.c | 35 ++++++++++++++----------
 1 file changed, 20 insertions(+), 15 deletions(-)

diff --git a/drivers/media/platform/vsp1/vsp1_video.c b/drivers/media/platform/vsp1/vsp1_video.c
index 328d686189be..cfbab16c4820 100644
--- a/drivers/media/platform/vsp1/vsp1_video.c
+++ b/drivers/media/platform/vsp1/vsp1_video.c
@@ -300,8 +300,22 @@ static int vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe)
  * Pipeline Management
  */
 
+static void vsp1_video_complete_buffer(struct vsp1_video *video,
+				       struct vsp1_vb2_buffer *buffer)
+{
+	struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
+	unsigned int i;
+
+	buffer->buf.sequence = pipe->sequence;
+	buffer->buf.vb2_buf.timestamp = ktime_get_ns();
+	for (i = 0; i < buffer->buf.vb2_buf.num_planes; ++i)
+		vb2_set_plane_payload(&buffer->buf.vb2_buf, i,
+				      vb2_plane_size(&buffer->buf.vb2_buf, i));
+	vb2_buffer_done(&buffer->buf.vb2_buf, VB2_BUF_STATE_DONE);
+}
+
 /*
- * vsp1_video_complete_buffer - Complete the current buffer
+ * vsp1_video_complete_next_buffer - Complete the current buffer
  * @video: the video node
  *
  * This function completes the current buffer by filling its sequence number,
@@ -310,13 +324,11 @@ static int vsp1_video_pipeline_setup_partitions(struct vsp1_pipeline *pipe)
  * Return the next queued buffer or NULL if the queue is empty.
  */
 static struct vsp1_vb2_buffer *
-vsp1_video_complete_buffer(struct vsp1_video *video)
+vsp1_video_complete_next_buffer(struct vsp1_video *video)
 {
-	struct vsp1_pipeline *pipe = video->rwpf->entity.pipe;
-	struct vsp1_vb2_buffer *next = NULL;
+	struct vsp1_vb2_buffer *next;
 	struct vsp1_vb2_buffer *done;
 	unsigned long flags;
-	unsigned int i;
 
 	spin_lock_irqsave(&video->irqlock, flags);
 
@@ -327,21 +339,14 @@ vsp1_video_complete_buffer(struct vsp1_video *video)
 
 	done = list_first_entry(&video->irqqueue,
 				struct vsp1_vb2_buffer, queue);
-
 	list_del(&done->queue);
 
-	if (!list_empty(&video->irqqueue))
-		next = list_first_entry(&video->irqqueue,
+	next = list_first_entry_or_null(&video->irqqueue,
 					struct vsp1_vb2_buffer, queue);
 
 	spin_unlock_irqrestore(&video->irqlock, flags);
 
-	done->buf.sequence = pipe->sequence;
-	done->buf.vb2_buf.timestamp = ktime_get_ns();
-	for (i = 0; i < done->buf.vb2_buf.num_planes; ++i)
-		vb2_set_plane_payload(&done->buf.vb2_buf, i,
-				      vb2_plane_size(&done->buf.vb2_buf, i));
-	vb2_buffer_done(&done->buf.vb2_buf, VB2_BUF_STATE_DONE);
+	vsp1_video_complete_buffer(video, done);
 
 	return next;
 }
@@ -352,7 +357,7 @@ static void vsp1_video_frame_end(struct vsp1_pipeline *pipe,
 	struct vsp1_video *video = rwpf->video;
 	struct vsp1_vb2_buffer *buf;
 
-	buf = vsp1_video_complete_buffer(video);
+	buf = vsp1_video_complete_next_buffer(video);
 	if (buf == NULL)
 		return;
 
-- 
Regards,

Laurent Pinchart