Re: [PATCH] drm/rockchip: return ERR_PTR instead of NULL

[Mark yao <mark.yao@rock-chips.com>]

On 2016年11月11日 05:10, Julia Lawall wrote:
> rockchip_drm_framebuffer_init is only used in one case, in
> rockchip_drm_fbdev.c, where its return value is tested using IS_ERR.  To
> enable propagating the reason for the error, change the definition so that
> it returns an ERR_PTR value.
>
> Problem found with the help of Coccinelle.
>
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Thanks for the fix.

Applied to my drm-next.

>
> ---
>   drivers/gpu/drm/rockchip/rockchip_drm_fb.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> index 0f6eda0..01e11bf 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_fb.c
> @@ -213,7 +213,7 @@ struct drm_framebuffer *
>   
>   	rockchip_fb = rockchip_fb_alloc(dev, mode_cmd, &obj, 1);
>   	if (IS_ERR(rockchip_fb))
> -		return NULL;
> +		return ERR_CAST(rockchip_fb);
>   
>   	return &rockchip_fb->fb;
>   }
>
>
>
>


-- 
Ｍark Yao