[PATCH v2 2/3] media: imx-csi: explicitly start media pipeline on pad 0

[Michael Tretter]

entity->pads is an array that contains all the pads of an entity.

Calling __media_pipeline_start() or __media_pipeline_stop() on the pads,
implicitly starts the pipeline with the first pad in this array as
origin.

Explicitly use the first pad to start the pipeline to make this more
obvious to the reader.

Reviewed-by: Frank Li <Frank.Li at nxp.com>
Reviewed-by: Philipp Zabel <p.zabel at pengutronix.de>
Signed-off-by: Michael Tretter <m.tretter at pengutronix.de>
---
Changes in v2:
- move struct media_pad *pad; before int ret = 0; for better read
---
 drivers/staging/media/imx/imx-media-utils.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/media/imx/imx-media-utils.c b/drivers/staging/media/imx/imx-media-utils.c
index f520529a7cfe..bd9af147a801 100644
--- a/drivers/staging/media/imx/imx-media-utils.c
+++ b/drivers/staging/media/imx/imx-media-utils.c
@@ -754,6 +754,7 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
 				  bool on)
 {
 	struct v4l2_subdev *sd;
+	struct media_pad *pad;
 	int ret = 0;
 
 	if (!is_media_entity_v4l2_subdev(entity))
@@ -762,17 +763,19 @@ int imx_media_pipeline_set_stream(struct imx_media_dev *imxmd,
 
 	mutex_lock(&imxmd->md.graph_mutex);
 
+	pad = &entity->pads[0];
+
 	if (on) {
-		ret = __media_pipeline_start(entity->pads, &vdev->pipe);
+		ret = __media_pipeline_start(pad, &vdev->pipe);
 		if (ret)
 			goto out;
 		ret = v4l2_subdev_call(sd, video, s_stream, 1);
 		if (ret)
-			__media_pipeline_stop(entity->pads);
+			__media_pipeline_stop(pad);
 	} else {
 		v4l2_subdev_call(sd, video, s_stream, 0);
-		if (media_pad_pipeline(entity->pads))
-			__media_pipeline_stop(entity->pads);
+		if (media_pad_pipeline(pad))
+			__media_pipeline_stop(pad);
 	}
 
 out:

-- 
2.47.3