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[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>
This commit is contained in:
Sakari Ailus 2015-12-16 11:32:26 -02:00 committed by Mauro Carvalho Chehab
parent fd7e5309a5
commit 08613c549f
1 changed files with 9 additions and 0 deletions
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9
drivers/media/platform/xilinx/xilinx-dma.c
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@ -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;