diff options
| author | Yunke Cao <yunkec@google.com> | 2022-04-12 09:23:13 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-04-24 09:56:44 +0300 |
| commit | 6008dea1c70e1a7df05c5e1bccd48e51ea29e670 (patch) | |
| tree | 040afbe04aa60a5b92f29b0cdcb18edf6a010535 /drivers/media/mc | |
| parent | d8fdfc66cfd720985480db42b939892e7bf65475 (diff) | |
| download | linux-6008dea1c70e1a7df05c5e1bccd48e51ea29e670.tar.xz | |
media: entity: skip non-data link when removing reverse links
The original implementation removes reverse links for any input link and
assumes the presense of sink/source.
It fails when the link is a not a data link.
media_entity_remove_links when there's an ancillary link can also fail.
We only need to remove reverse links for a data link.
Signed-off-by: Yunke Cao <yunkec@google.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/mc')
| -rw-r--r-- | drivers/media/mc/mc-entity.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c index 8ab0913d8d82..20f5a76bd78b 100644 --- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -579,26 +579,30 @@ static void __media_entity_remove_link(struct media_entity *entity, struct media_link *rlink, *tmp; struct media_entity *remote; - if (link->source->entity == entity) - remote = link->sink->entity; - else - remote = link->source->entity; + /* Remove the reverse links for a data link. */ + if ((link->flags & MEDIA_LNK_FL_LINK_TYPE) == MEDIA_LNK_FL_DATA_LINK) { + if (link->source->entity == entity) + remote = link->sink->entity; + else + remote = link->source->entity; - list_for_each_entry_safe(rlink, tmp, &remote->links, list) { - if (rlink != link->reverse) - continue; + list_for_each_entry_safe(rlink, tmp, &remote->links, list) { + if (rlink != link->reverse) + continue; - if (link->source->entity == entity) - remote->num_backlinks--; + if (link->source->entity == entity) + remote->num_backlinks--; - /* Remove the remote link */ - list_del(&rlink->list); - media_gobj_destroy(&rlink->graph_obj); - kfree(rlink); + /* Remove the remote link */ + list_del(&rlink->list); + media_gobj_destroy(&rlink->graph_obj); + kfree(rlink); - if (--remote->num_links == 0) - break; + if (--remote->num_links == 0) + break; + } } + list_del(&link->list); media_gobj_destroy(&link->graph_obj); kfree(link); |