diff options
| -rw-r--r-- | drivers/media/platform/rcar-vin/rcar-core.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c index b28e3ff191c2..594d80434004 100644 --- a/drivers/media/platform/rcar-vin/rcar-core.c +++ b/drivers/media/platform/rcar-vin/rcar-core.c @@ -131,9 +131,13 @@ static int rvin_group_link_notify(struct media_link *link, u32 flags, !is_media_entity_v4l2_video_device(link->sink->entity)) return 0; - /* If any entity is in use don't allow link changes. */ + /* + * Don't allow link changes if any entity in the graph is + * streaming, modifying the CHSEL register fields can disrupt + * running streams. + */ media_device_for_each_entity(entity, &group->mdev) - if (entity->use_count) + if (entity->stream_count) return -EBUSY; mutex_lock(&group->lock); |