diff mbox series

[v3,1/9] media: i2c: ds90ub9x3: Fix sub-device matching

Message ID 20230731-fpdlink-additions-v3-1-8acfc49c215a@ideasonboard.com
State New
Headers
Series media: i2c: ds90ub9xx: Misc improvements |

Commit Message

Tomi Valkeinen July 31, 2023, 1:24 p.m. UTC 
  1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode
matching") recently changed how async sub-device matching works. This
breaks the UB9x3 drivers, as they set the subdev.fwnode to an endpoint.
Afaiu, the fix is simply to not set subdev.fwnode at all.

Fixes: 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode matching")
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/i2c/ds90ub913.c | 14 +-------------
 drivers/media/i2c/ds90ub953.c | 13 +------------
 2 files changed, 2 insertions(+), 25 deletions(-)

Comments

Laurent Pinchart July 31, 2023, 2:43 p.m. UTC | #1 
Hi Tomi,

Thank you for the patch.

On Mon, Jul 31, 2023 at 04:24:35PM +0300, Tomi Valkeinen wrote:
> 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode

s/^/Commit /

> matching") recently changed how async sub-device matching works. This
> breaks the UB9x3 drivers, as they set the subdev.fwnode to an endpoint.
> Afaiu, the fix is simply to not set subdev.fwnode at all.
> 
> Fixes: 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode matching")
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> Cc: Sakari Ailus <sakari.ailus@linux.intel.com>

Sakari, was the v4l2-async series meant to break these drivers ? I
understand the two series got merged for the same kernel version, is
this a merge conflict, or is there an issue in the v4l2-async rework ?

> ---
>  drivers/media/i2c/ds90ub913.c | 14 +-------------
>  drivers/media/i2c/ds90ub953.c | 13 +------------
>  2 files changed, 2 insertions(+), 25 deletions(-)
> 
> diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
> index 80d9cf6dd945..5410ccb54057 100644
> --- a/drivers/media/i2c/ds90ub913.c
> +++ b/drivers/media/i2c/ds90ub913.c
> @@ -749,19 +749,9 @@ static int ub913_subdev_init(struct ub913_data *priv)
>  	if (ret)
>  		return dev_err_probe(dev, ret, "Failed to init pads\n");
>  
> -	priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
> -							  UB913_PAD_SOURCE, 0,
> -							  0);
> -
> -	if (!priv->sd.fwnode) {
> -		ret = -ENODEV;
> -		dev_err_probe(dev, ret, "Missing TX endpoint\n");
> -		goto err_entity_cleanup;
> -	}
> -
>  	ret = v4l2_subdev_init_finalize(&priv->sd);
>  	if (ret)
> -		goto err_fwnode_put;
> +		goto err_entity_cleanup;
>  
>  	ret = ub913_v4l2_notifier_register(priv);
>  	if (ret) {
> @@ -782,8 +772,6 @@ static int ub913_subdev_init(struct ub913_data *priv)
>  	ub913_v4l2_nf_unregister(priv);
>  err_subdev_cleanup:
>  	v4l2_subdev_cleanup(&priv->sd);
> -err_fwnode_put:
> -	fwnode_handle_put(priv->sd.fwnode);
>  err_entity_cleanup:
>  	media_entity_cleanup(&priv->sd.entity);
>  
> diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
> index cadf75eb0773..20b9cf893f74 100644
> --- a/drivers/media/i2c/ds90ub953.c
> +++ b/drivers/media/i2c/ds90ub953.c
> @@ -1221,18 +1221,9 @@ static int ub953_subdev_init(struct ub953_data *priv)
>  	if (ret)
>  		return dev_err_probe(dev, ret, "Failed to init pads\n");
>  
> -	priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
> -							  UB953_PAD_SOURCE, 0,
> -							  0);
> -	if (!priv->sd.fwnode) {
> -		ret = -ENODEV;
> -		dev_err_probe(dev, ret, "Missing TX endpoint\n");
> -		goto err_entity_cleanup;
> -	}
> -
>  	ret = v4l2_subdev_init_finalize(&priv->sd);
>  	if (ret)
> -		goto err_fwnode_put;
> +		goto err_entity_cleanup;
>  
>  	ret = ub953_v4l2_notifier_register(priv);
>  	if (ret) {
> @@ -1253,8 +1244,6 @@ static int ub953_subdev_init(struct ub953_data *priv)
>  	ub953_v4l2_notifier_unregister(priv);
>  err_free_state:
>  	v4l2_subdev_cleanup(&priv->sd);
> -err_fwnode_put:
> -	fwnode_handle_put(priv->sd.fwnode);
>  err_entity_cleanup:
>  	media_entity_cleanup(&priv->sd.entity);
>  
>
Sakari Ailus July 31, 2023, 7:05 p.m. UTC | #2 
Hi Laurent,

On Mon, Jul 31, 2023 at 05:43:56PM +0300, Laurent Pinchart wrote:
> Hi Tomi,
> 
> Thank you for the patch.
> 
> On Mon, Jul 31, 2023 at 04:24:35PM +0300, Tomi Valkeinen wrote:
> > 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode
> 
> s/^/Commit /
> 
> > matching") recently changed how async sub-device matching works. This
> > breaks the UB9x3 drivers, as they set the subdev.fwnode to an endpoint.
> > Afaiu, the fix is simply to not set subdev.fwnode at all.
> > 
> > Fixes: 1029939b3782 ("media: v4l: async: Simplify async sub-device fwnode matching")
> > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
> > Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> 
> Sakari, was the v4l2-async series meant to break these drivers ? I
> understand the two series got merged for the same kernel version, is
> this a merge conflict, or is there an issue in the v4l2-async rework ?

The ds90ub9xx drivers were merged after I had written the patch that
converted all drivers and I didn't remember to revisit it.

If you look at the patch, it's doing very similar things than the patch in
the Fixes: tag.

There's also a workaround for sub-device drivers (that register async
sub-devices) but not for drivers that register a notifier. It probably
doesn't make sense to add a workaround for those how, rather remove the one
that exists (after some time).
diff mbox series

Patch

diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
index 80d9cf6dd945..5410ccb54057 100644
--- a/drivers/media/i2c/ds90ub913.c
+++ b/drivers/media/i2c/ds90ub913.c
@@ -749,19 +749,9 @@  static int ub913_subdev_init(struct ub913_data *priv)
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to init pads\n");
 
-	priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
-							  UB913_PAD_SOURCE, 0,
-							  0);
-
-	if (!priv->sd.fwnode) {
-		ret = -ENODEV;
-		dev_err_probe(dev, ret, "Missing TX endpoint\n");
-		goto err_entity_cleanup;
-	}
-
 	ret = v4l2_subdev_init_finalize(&priv->sd);
 	if (ret)
-		goto err_fwnode_put;
+		goto err_entity_cleanup;
 
 	ret = ub913_v4l2_notifier_register(priv);
 	if (ret) {
@@ -782,8 +772,6 @@  static int ub913_subdev_init(struct ub913_data *priv)
 	ub913_v4l2_nf_unregister(priv);
 err_subdev_cleanup:
 	v4l2_subdev_cleanup(&priv->sd);
-err_fwnode_put:
-	fwnode_handle_put(priv->sd.fwnode);
 err_entity_cleanup:
 	media_entity_cleanup(&priv->sd.entity);
 
diff --git a/drivers/media/i2c/ds90ub953.c b/drivers/media/i2c/ds90ub953.c
index cadf75eb0773..20b9cf893f74 100644
--- a/drivers/media/i2c/ds90ub953.c
+++ b/drivers/media/i2c/ds90ub953.c
@@ -1221,18 +1221,9 @@  static int ub953_subdev_init(struct ub953_data *priv)
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to init pads\n");
 
-	priv->sd.fwnode = fwnode_graph_get_endpoint_by_id(dev_fwnode(dev),
-							  UB953_PAD_SOURCE, 0,
-							  0);
-	if (!priv->sd.fwnode) {
-		ret = -ENODEV;
-		dev_err_probe(dev, ret, "Missing TX endpoint\n");
-		goto err_entity_cleanup;
-	}
-
 	ret = v4l2_subdev_init_finalize(&priv->sd);
 	if (ret)
-		goto err_fwnode_put;
+		goto err_entity_cleanup;
 
 	ret = ub953_v4l2_notifier_register(priv);
 	if (ret) {
@@ -1253,8 +1244,6 @@  static int ub953_subdev_init(struct ub953_data *priv)
 	ub953_v4l2_notifier_unregister(priv);
 err_free_state:
 	v4l2_subdev_cleanup(&priv->sd);
-err_fwnode_put:
-	fwnode_handle_put(priv->sd.fwnode);
 err_entity_cleanup:
 	media_entity_cleanup(&priv->sd.entity);