* [PATCH] drm/rockchip: return ERR_PTR instead of NULL
@ 2016-11-10 21:10 Julia Lawall
2016-11-11 1:45 ` Mark yao
0 siblings, 1 reply; 2+ messages in thread
From: Julia Lawall @ 2016-11-10 21:10 UTC (permalink / raw)
To: linux-arm-kernel
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>
---
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;
}
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] drm/rockchip: return ERR_PTR instead of NULL
2016-11-10 21:10 [PATCH] drm/rockchip: return ERR_PTR instead of NULL Julia Lawall
@ 2016-11-11 1:45 ` Mark yao
0 siblings, 0 replies; 2+ messages in thread
From: Mark yao @ 2016-11-11 1:45 UTC (permalink / raw)
To: linux-arm-kernel
On 2016?11?11? 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;
> }
>
>
>
>
--
?ark Yao
^ permalink raw reply [flat|nested] 2+ messages in thread
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