[media] v4l: xilinx: Use the new media graph walk interface

The media graph walk requires initialisation and cleanup soon. Update the
users to perform the soon necessary API calls.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Hyun Kwon <hyun.kwon@xilinx.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/platform/xilinx/xilinx-dma.c b/drivers/media/platform/xilinx/xilinx-dma.c
index 0181ff402a5ab97b949bff6b6b8f754a5c7f5b39..7f6898b13cacdbf764335d9acfc9d46e2d0ea043 100644 (file)
--- 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;