diff mbox

drm/i915/pmu: fix noderef.cocci warnings

Message ID 20180112133116.GA14498@lkp-ib03 (mailing list archive)
State New, archived
Headers show

Commit Message

Fengguang Wu Jan. 12, 2018, 1:31 p.m. UTC
From: Fengguang Wu <fengguang.wu@intel.com>

drivers/gpu/drm/i915/i915_pmu.c:795:34-40: ERROR: application of sizeof to pointer

 sizeof when applied to a pointer typed expression gives the size of
 the pointer

Generated by: scripts/coccinelle/misc/noderef.cocci

Fixes: 109ec558370f ("drm/i915/pmu: Only enumerate available counters in sysfs")
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
---

 i915_pmu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Tvrtko Ursulin Jan. 12, 2018, 2:28 p.m. UTC | #1
On 12/01/2018 13:31, kbuild test robot wrote:
> From: Fengguang Wu <fengguang.wu@intel.com>
> 
> drivers/gpu/drm/i915/i915_pmu.c:795:34-40: ERROR: application of sizeof to pointer
> 
>   sizeof when applied to a pointer typed expression gives the size of
>   the pointer
> 
> Generated by: scripts/coccinelle/misc/noderef.cocci
> 
> Fixes: 109ec558370f ("drm/i915/pmu: Only enumerate available counters in sysfs")
> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
> ---
> 
>   i915_pmu.c |    2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/gpu/drm/i915/i915_pmu.c
> +++ b/drivers/gpu/drm/i915/i915_pmu.c
> @@ -792,7 +792,7 @@ create_event_attributes(struct drm_i915_
>   		goto err_alloc;
>   
>   	/* Max one pointer of each attribute type plus a termination entry. */
> -	attr = kzalloc((count * 2 + 1) * sizeof(attr), GFP_KERNEL);
> +	attr = kzalloc((count * 2 + 1) * sizeof(*attr), GFP_KERNEL);
>   	if (!attr)
>   		goto err_alloc;
>   

Luckily it is the same size so no actual bug, but fix is still valid. 
Will merge it once it passes CI, thanks!

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>

Regards,

Tvrtko
Ville Syrjala Jan. 12, 2018, 2:33 p.m. UTC | #2
On Fri, Jan 12, 2018 at 09:31:16PM +0800, kbuild test robot wrote:
> From: Fengguang Wu <fengguang.wu@intel.com>
> 
> drivers/gpu/drm/i915/i915_pmu.c:795:34-40: ERROR: application of sizeof to pointer
> 
>  sizeof when applied to a pointer typed expression gives the size of
>  the pointer
> 
> Generated by: scripts/coccinelle/misc/noderef.cocci
> 
> Fixes: 109ec558370f ("drm/i915/pmu: Only enumerate available counters in sysfs")
> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
> ---
> 
>  i915_pmu.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- a/drivers/gpu/drm/i915/i915_pmu.c
> +++ b/drivers/gpu/drm/i915/i915_pmu.c
> @@ -792,7 +792,7 @@ create_event_attributes(struct drm_i915_
>  		goto err_alloc;
>  
>  	/* Max one pointer of each attribute type plus a termination entry. */
> -	attr = kzalloc((count * 2 + 1) * sizeof(attr), GFP_KERNEL);
> +	attr = kzalloc((count * 2 + 1) * sizeof(*attr), GFP_KERNEL);

kcalloc()?

>  	if (!attr)
>  		goto err_alloc;
>  
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
diff mbox

Patch

--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -792,7 +792,7 @@  create_event_attributes(struct drm_i915_
 		goto err_alloc;
 
 	/* Max one pointer of each attribute type plus a termination entry. */
-	attr = kzalloc((count * 2 + 1) * sizeof(attr), GFP_KERNEL);
+	attr = kzalloc((count * 2 + 1) * sizeof(*attr), GFP_KERNEL);
 	if (!attr)
 		goto err_alloc;