The media_entity_remote_source_pad_unique() function never returns NULL,
it returns error pointers.  Change this check from a NULL check to an
IS_ERR() check.

Fixes: 31f91c5224cd ("media: ti: j721e-csi2rx: Support multiple pixels per clock")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
index 3992f8b754b7..b75aa363d1bf 100644
--- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
+++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
@@ -497,7 +497,7 @@ static void ti_csi2rx_request_max_ppc(struct ti_csi2rx_dev *csi)
 	int ret;
 
 	pad = media_entity_remote_source_pad_unique(&csi->vdev.entity);
-	if (!pad)
+	if (IS_ERR(pad))
 		return;
 
 	ret = cdns_csi2rx_negotiate_ppc(csi->source, pad->index, &ppc);
-- 
2.47.2

Hi Dan,

Quoting Dan Carpenter (2025-08-27 18:32:57)
> The media_entity_remote_source_pad_unique() function never returns NULL,
> it returns error pointers.  Change this check from a NULL check to an
> IS_ERR() check.
> 
> Fixes: 31f91c5224cd ("media: ti: j721e-csi2rx: Support multiple pixels per clock")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
> ---
>  drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> index 3992f8b754b7..b75aa363d1bf 100644
> --- a/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> +++ b/drivers/media/platform/ti/j721e-csi2rx/j721e-csi2rx.c
> @@ -497,7 +497,7 @@ static void ti_csi2rx_request_max_ppc(struct ti_csi2rx_dev *csi)
>         int ret;
>  
>         pad = media_entity_remote_source_pad_unique(&csi->vdev.entity);
> -       if (!pad)
> +       if (IS_ERR(pad))

Argh, my bad. Thanks for the quick fix.

Reviewed-by: Jai Luthra <jai.luthra@ideasonboard.com>

>                 return;
>  
>         ret = cdns_csi2rx_negotiate_ppc(csi->source, pad->index, &ppc);
> -- 
> 2.47.2
>