[media] dvb core: must check dvb_create_media_graph()

If media controller is enabled and mdev is filled, it should
ensure that the media graph will be properly initialized.

Enforce that.

Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 5 insertions, 1 deletions

diff --git a/drivers/media/common/siano/smsdvb-main.c b/drivers/media/common/siano/smsdvb-main.c
index f4305ae800f4..ab345490a43a 100644
--- a/drivers/media/common/siano/smsdvb-main.c
+++ b/drivers/media/common/siano/smsdvb-main.c
@@ -1183,7 +1183,11 @@ static int smsdvb_hotplug(struct smscore_device_t *coredev,
         if (smsdvb_debugfs_create(client) < 0)
                 pr_info("failed to create debugfs node\n");
 
-        dvb_create_media_graph(&client->adapter);
+        rc = dvb_create_media_graph(&client->adapter);
+        if (rc < 0) {
+                pr_err("dvb_create_media_graph failed %d\n", rc);
+                goto client_error;
+        }
 
         pr_info("DVB interface registered.\n");
         return 0;