Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Cc: Hyun Kwon <hyun.kwon@xxxxxxxxxx>
---
drivers/media/platform/xilinx/xilinx-dma.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index bc244a0..0a19824 100644
--- a/drivers/media/platform/xilinx/xilinx-dma.c
+++ b/drivers/media/platform/xilinx/xilinx-dma.c
@@ -182,10 +182,17 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
struct media_device *mdev = entity->graph_obj.mdev;
unsigned int num_inputs = 0;
unsigned int num_outputs = 0;
+ int ret;
mutex_lock(&mdev->graph_mutex);
/* Walk the graph to locate the video nodes. */
+ ret = media_entity_graph_walk_init(&graph, entity->graph_obj.mdev);
+ if (ret) {
+ mutex_unlock(&mdev->graph_mutex);
+ return ret;
+ }
+
media_entity_graph_walk_start(&graph, entity);
while ((entity = media_entity_graph_walk_next(&graph))) {
@@ -206,6 +213,8 @@ static int xvip_pipeline_validate(struct xvip_pipeline *pipe,
mutex_unlock(&mdev->graph_mutex);
+ media_entity_graph_walk_cleanup(&graph);
+
/* We need exactly one output and zero or one input. */
if (num_outputs != 1 || num_inputs > 1)
return -EPIPE;
--
2.1.4
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