diff mbox

drm/amd/display: remove redundant null check of array 'data'

Message ID 20171215105343.11372-1-colin.king@canonical.com (mailing list archive)
State New, archived
Headers show

Commit Message

Colin King Dec. 15, 2017, 10:53 a.m. UTC 
From: Colin Ian King <colin.king@canonical.com>

The null check on aconnector->base.edid_blob_ptr->data is redundant
since data is an array and can never be null.  Remove it.

Detected by CoverityScan, CID#1460369 ("Array compared against 0")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Comments

Christian König Dec. 15, 2017, 12:18 p.m. UTC | #1 
Am 15.12.2017 um 11:53 schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
>
> The null check on aconnector->base.edid_blob_ptr->data is redundant
> since data is an array and can never be null.  Remove it.
>
> Detected by CoverityScan, CID#1460369 ("Array compared against 0")
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Acked-by: Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index ccbf10e3bbb6..c388778dbba3 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -2725,8 +2725,7 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
>   	};
>   	struct edid *edid;
>   
> -	if (!aconnector->base.edid_blob_ptr ||
> -		!aconnector->base.edid_blob_ptr->data) {
> +	if (!aconnector->base.edid_blob_ptr) {
>   		DRM_ERROR("No EDID firmware found on connector: %s ,forcing to OFF!\n",
>   				aconnector->base.name);
>
Harry Wentland Dec. 15, 2017, 3:05 p.m. UTC | #2 
On 2017-12-15 05:53 AM, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
> 
> The null check on aconnector->base.edid_blob_ptr->data is redundant
> since data is an array and can never be null.  Remove it.
> 
> Detected by CoverityScan, CID#1460369 ("Array compared against 0")
> 
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Reviewed-by: Harry Wentland <harry.wentland@amd.com>

Harry

> ---
>  drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index ccbf10e3bbb6..c388778dbba3 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -2725,8 +2725,7 @@ static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
>  	};
>  	struct edid *edid;
>  
> -	if (!aconnector->base.edid_blob_ptr ||
> -		!aconnector->base.edid_blob_ptr->data) {
> +	if (!aconnector->base.edid_blob_ptr) {
>  		DRM_ERROR("No EDID firmware found on connector: %s ,forcing to OFF!\n",
>  				aconnector->base.name);
>  
>
diff mbox

Patch

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ccbf10e3bbb6..c388778dbba3 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2725,8 +2725,7 @@  static void create_eml_sink(struct amdgpu_dm_connector *aconnector)
 	};
 	struct edid *edid;
 
-	if (!aconnector->base.edid_blob_ptr ||
-		!aconnector->base.edid_blob_ptr->data) {
+	if (!aconnector->base.edid_blob_ptr) {
 		DRM_ERROR("No EDID firmware found on connector: %s ,forcing to OFF!\n",
 				aconnector->base.name);