[PATCH] drm/msm: Remove redundant null check

[PATCH] drm/msm: Remove redundant null check

[Tian Tao]

clk_prepare_enable() and clk_disable_unprepare() will check
NULL clock parameter, so It is not necessary to add additional checks.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
---
 drivers/gpu/drm/msm/msm_gpu.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
index 57ddc94..25bc654 100644
--- a/drivers/gpu/drm/msm/msm_gpu.c
+++ b/drivers/gpu/drm/msm/msm_gpu.c
@@ -175,15 +175,12 @@ static int disable_clk(struct msm_gpu *gpu)
 
 static int enable_axi(struct msm_gpu *gpu)
 {
-	if (gpu->ebi1_clk)
-		clk_prepare_enable(gpu->ebi1_clk);
-	return 0;
+	return clk_prepare_enable(gpu->ebi1_clk);
 }
 
 static int disable_axi(struct msm_gpu *gpu)
 {
-	if (gpu->ebi1_clk)
-		clk_disable_unprepare(gpu->ebi1_clk);
+	clk_disable_unprepare(gpu->ebi1_clk);
 	return 0;
 }
 
-- 
2.7.4

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Re: [Freedreno] [PATCH] drm/msm: Remove redundant null check

[Jordan Crouse]

On Mon, Oct 19, 2020 at 02:04:22PM +0800, Tian Tao wrote:
> clk_prepare_enable() and clk_disable_unprepare() will check
> NULL clock parameter, so It is not necessary to add additional checks.

Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>

> Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
> ---
>  drivers/gpu/drm/msm/msm_gpu.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c
> index 57ddc94..25bc654 100644
> --- a/drivers/gpu/drm/msm/msm_gpu.c
> +++ b/drivers/gpu/drm/msm/msm_gpu.c
> @@ -175,15 +175,12 @@ static int disable_clk(struct msm_gpu *gpu)
>  
>  static int enable_axi(struct msm_gpu *gpu)
>  {
> -	if (gpu->ebi1_clk)
> -		clk_prepare_enable(gpu->ebi1_clk);
> -	return 0;
> +	return clk_prepare_enable(gpu->ebi1_clk);
>  }
>  
>  static int disable_axi(struct msm_gpu *gpu)
>  {
> -	if (gpu->ebi1_clk)
> -		clk_disable_unprepare(gpu->ebi1_clk);
> +	clk_disable_unprepare(gpu->ebi1_clk);
>  	return 0;
>  }
>  
> -- 
> 2.7.4
> 
> _______________________________________________
> Freedreno mailing list
> Freedreno@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno

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[PATCH] drm/msm: remove redundant NULL check

[Jiapeng Zhong]

Fix below warnings reported by coccicheck:
./drivers/gpu/drm/msm/msm_gem.c:991:3-9: WARNING: NULL check before some
freeing functions is not needed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Zhong <abaci-bugfix@linux.alibaba.com>
---
 drivers/gpu/drm/msm/msm_gem.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_gem.c b/drivers/gpu/drm/msm/msm_gem.c
index 9d10739..4f1f1a0 100644
--- a/drivers/gpu/drm/msm/msm_gem.c
+++ b/drivers/gpu/drm/msm/msm_gem.c
@@ -987,8 +987,7 @@ void msm_gem_free_object(struct drm_gem_object *obj)
 		/* Don't drop the pages for imported dmabuf, as they are not
 		 * ours, just free the array we allocated:
 		 */
-		if (msm_obj->pages)
-			kvfree(msm_obj->pages);
+		kvfree(msm_obj->pages);
 
 		put_iova_vmas(obj);
 
-- 
1.8.3.1

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