Re: [PATCH] drm: Fix return value check in kirin_drm_platform_probe()

[Sean Paul <seanpaul@chromium.org>]

On Wed, Oct 11, 2017 at 11:17:16AM +0000, Wei Yongjun wrote:
> In case of error, the function of_graph_get_remote_node() returns NULL
> pointer not ERR_PTR(). The IS_ERR() test in the return value check
> should be replaced with NULL test..
> 
> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>

Reviewed-by: Sean Paul <seanpaul@chromium.org>

> ---
>  drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> index e27352c..527aa58 100644
> --- a/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> +++ b/drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c
> @@ -236,8 +236,8 @@ static int kirin_drm_platform_probe(struct platform_device *pdev)
>  	}
>  
>  	remote = of_graph_get_remote_node(np, 0, 0);
> -	if (IS_ERR(remote))
> -		return PTR_ERR(remote);
> +	if (!remote)
> +		return -ENODEV;
>  
>  	drm_of_component_match_add(dev, &match, compare_of, remote);
>  	of_node_put(remote);
> 
> 
> 

-- 
Sean Paul, Software Engineer, Google / Chromium OS