Re: [PATCH next] drm/bridge: analogix_dp: Fix a NULL vs IS_ERR() bug

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Hello Dan,

On Tue, 15 Jul 2025 17:59:06 -0500
Dan Carpenter <dan.carpenter@xxxxxxxxxx> wrote:

> The devm_drm_bridge_alloc() function returns error pointers on error.  It
> never returns NULL.
> 
> Fixes: 48f05c3b4b70 ("drm/bridge: analogix_dp: Use devm_drm_bridge_alloc() API")
> Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> index ed35e567d117..4b9b444bd249 100644
> --- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> +++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
> @@ -1474,8 +1474,8 @@ analogix_dp_probe(struct device *dev, struct analogix_dp_plat_data *plat_data)
>  
>  	dp = devm_drm_bridge_alloc(dev, struct analogix_dp_device, bridge,
>  				   &analogix_dp_bridge_funcs);
> -	if (!dp)
> -		return ERR_PTR(-ENOMEM);
> +	if (IS_ERR(dp))
> +		return dp;

Reviewed-by: Luca Ceresoli <luca.ceresoli@xxxxxxxxxxx>

Thanks!

Luca

-- 
Luca Ceresoli, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com




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