After sub-dev registration in v4l2_async_test_notify(), the v4l2-async
core calls the registered_async callback but if a sub-dev driver does
not implement it, v4l2_subdev_call() will return a -ENOIOCTLCMD which
should not be considered an error.
Reported-by: Benoit Parrot <bparrot@xxxxxx>
Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
---
Changes in v2:
- Check the return of v4l2_subdev_call (Benoit).
drivers/media/v4l2-core/v4l2-async.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 716bfd47daab..a4b224d92572 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -120,7 +120,7 @@ static int v4l2_async_test_notify(struct v4l2_async_notifier *notifier,
}
ret = v4l2_subdev_call(sd, core, registered_async);
- if (ret < 0) {
+ if (ret < 0 && ret != -ENOIOCTLCMD) {
if (notifier->unbind)
notifier->unbind(notifier, sd, asd);
return ret;
--
2.5.0
--
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