Re: [PATCH v4 1/6] media: rcar-vin: Use correct count of remote subdevices

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Hi Niklas,

Thank you for the patch.

On Wed, May 21, 2025 at 03:20:32PM +0200, Niklas Söderlund wrote:
> When extending the driver with Gen4 support the iteration of over
> possible remote subdevices changed from being R-Car CSI-2 Rx only to
> also cover R-Car CSISP instances. In two loops updating the bounds
> variable was missed.
> 
> This had no ill effect as the count the two values have always been the
> same in the past. Fix it before the two diverge.
> 
> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
> ---
>  drivers/media/platform/renesas/rcar-vin/rcar-core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-core.c b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
> index 846ae7989b1d..b9ea5b8db559 100644
> --- a/drivers/media/platform/renesas/rcar-vin/rcar-core.c
> +++ b/drivers/media/platform/renesas/rcar-vin/rcar-core.c
> @@ -262,7 +262,7 @@ static void rvin_group_notify_unbind(struct v4l2_async_notifier *notifier,
>  
>  	mutex_lock(&vin->group->lock);
>  
> -	for (i = 0; i < RVIN_CSI_MAX; i++) {
> +	for (i = 0; i < RVIN_REMOTES_MAX; i++) {

Using ARRAY_SIZE would be even better I think.

	for (i = 0; i < ARRAY_SIZE(vin->group->remotes); i++) {

Same below.

Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>

>  		if (vin->group->remotes[i].asc != asc)
>  			continue;
>  		vin->group->remotes[i].subdev = NULL;
> @@ -284,7 +284,7 @@ static int rvin_group_notify_bound(struct v4l2_async_notifier *notifier,
>  
>  	mutex_lock(&vin->group->lock);
>  
> -	for (i = 0; i < RVIN_CSI_MAX; i++) {
> +	for (i = 0; i < RVIN_REMOTES_MAX; i++) {
>  		if (vin->group->remotes[i].asc != asc)
>  			continue;
>  		vin->group->remotes[i].subdev = subdev;

-- 
Regards,

Laurent Pinchart




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