[PATCH v2 11/22] v4l: xilinx: Use the new media_entity_graph_walk_start() interface

[Sakari Ailus]

Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Cc: Hyun Kwon <hyun.k...@xilinx.com>
---
 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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