From: Mauro Carvalho Chehab Date: Wed, 19 Aug 2015 23:18:35 +0000 (-0300) Subject: [media] media: Don't accept early-created links X-Git-Tag: Ubuntu-5.0.0-8.9~8028^2~148 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=8f6d368f726bb4fa069af5ef5806f15ba6da6ad8;p=mirror_ubuntu-disco-kernel.git [media] media: Don't accept early-created links Links are graph objects that represent the links of two already existing objects in the graph. While with the current implementation, it is possible to create the links earlier, It doesn't make any sense to allow linking two objects when they are not both created. So, remove the code that would be handling those early-created links and add a BUG_ON() to ensure that. Acked-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c index 138b18416460..0d85c6c28004 100644 --- a/drivers/media/media-device.c +++ b/drivers/media/media-device.c @@ -443,13 +443,6 @@ int __must_check media_device_register_entity(struct media_device *mdev, media_gobj_init(mdev, MEDIA_GRAPH_ENTITY, &entity->graph_obj); list_add_tail(&entity->list, &mdev->entities); - /* - * Initialize objects at the links - * in the case where links got created before entity register - */ - for (i = 0; i < entity->num_links; i++) - media_gobj_init(mdev, MEDIA_GRAPH_LINK, - &entity->links[i].graph_obj); /* Initialize objects at the pads */ for (i = 0; i < entity->num_pads; i++) media_gobj_init(mdev, MEDIA_GRAPH_PAD, diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 160ce2cc0865..f85a711d4958 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -149,6 +149,8 @@ void media_gobj_init(struct media_device *mdev, enum media_gobj_type type, struct media_gobj *gobj) { + BUG_ON(!mdev); + gobj->mdev = mdev; /* Create a per-type unique object ID */