diff mbox series

[v6,26/38] media: v4l: async: Try more connections

Message ID 20230727054255.1183255-27-sakari.ailus@linux.intel.com (mailing list archive)
State New, archived
Headers show
Series Separate links and async sub-devices | expand

Commit Message

Sakari Ailus July 27, 2023, 5:42 a.m. UTC
When an async sub-device is registered, it used to be that the first one
of its connections were matched when found. Continue looking for matches
until a notifier no longer has any.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Tested-by: Philipp Zabel <p.zabel@pengutronix.de> # imx6qp
Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> # rcar + adv746x
Tested-by: Aishwarya Kothari <aishwarya.kothari@toradex.com> # Apalis i.MX6Q with TC358743
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # Renesas RZ/G2L SMARC
---
 drivers/media/v4l2-core/v4l2-async.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Mauro Carvalho Chehab July 28, 2023, 8:52 a.m. UTC | #1
Em Thu, 27 Jul 2023 08:42:43 +0300
Sakari Ailus <sakari.ailus@linux.intel.com> escreveu:

> When an async sub-device is registered, it used to be that the first one
> of its connections were matched when found. Continue looking for matches
> until a notifier no longer has any.
> 
> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
> Tested-by: Philipp Zabel <p.zabel@pengutronix.de> # imx6qp
> Tested-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> # rcar + adv746x
> Tested-by: Aishwarya Kothari <aishwarya.kothari@toradex.com> # Apalis i.MX6Q with TC358743
> Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> # Renesas RZ/G2L SMARC
> ---
>  drivers/media/v4l2-core/v4l2-async.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
> index 44f72aa75c19..6b3c02d27ebf 100644
> --- a/drivers/media/v4l2-core/v4l2-async.c
> +++ b/drivers/media/v4l2-core/v4l2-async.c
> @@ -789,6 +789,7 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
>  		if (!v4l2_dev)
>  			continue;
>  
> +again:
>  		asc = v4l2_async_find_match(notifier, sd);
>  		if (!asc)
>  			continue;
> @@ -801,13 +802,12 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
>  		if (ret)
>  			goto err_unbind;
>  
> -		goto out_unlock;
> +		goto again;
>  	}

Using a goto here instead of a do {} while is not nice. I'll merge it
as-is, but please send a followup patch using a proper loop.


Regards

Thanks,
Mauro
diff mbox series

Patch

diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index 44f72aa75c19..6b3c02d27ebf 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -789,6 +789,7 @@  int v4l2_async_register_subdev(struct v4l2_subdev *sd)
 		if (!v4l2_dev)
 			continue;
 
+again:
 		asc = v4l2_async_find_match(notifier, sd);
 		if (!asc)
 			continue;
@@ -801,13 +802,12 @@  int v4l2_async_register_subdev(struct v4l2_subdev *sd)
 		if (ret)
 			goto err_unbind;
 
-		goto out_unlock;
+		goto again;
 	}
 
 	/* None matched, wait for hot-plugging */
 	list_add(&sd->async_list, &subdev_list);
 
-out_unlock:
 	mutex_unlock(&list_lock);
 
 	return 0;