linux-kernel - Re: [PATCH 2/13] drivers/gpu/drm/i915: Remove redundant test

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Date:	Sun, 21 Dec 2008 10:16:36 -0800
From:	Eric Anholt <eric@...olt.net>
To:	Julia Lawall <julia@...u.dk>
Cc:	airlied@...ux.ie, dri-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 2/13] drivers/gpu/drm/i915: Remove redundant test

On Sun, 2008-12-21 at 16:28 +0100, Julia Lawall wrote:
> From: Julia Lawall <julia@...u.dk>
> 
> object_list is checked to be not NULL near the beginning of the function and
> is not updated subsequently.
> 
> A simplified version of the semantic patch that makes this change is as
> follows: (http://www.emn.fr/x-info/coccinelle/)
> 
> // <smpl>

Committed.  Thanks!

> ---
>  drivers/gpu/drm/i915/i915_gem.c     |   11 +++++------
>  1 files changed, 5 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
> index fccf199..78319ec 100644
> --- a/drivers/gpu/drm/i915/i915_gem.c
> +++ b/drivers/gpu/drm/i915/i915_gem.c
> @@ -2611,13 +2611,12 @@ i915_gem_execbuffer(struct drm_device *dev, void *data,
>  			  "back to user (%d)\n",
>  			   args->buffer_count, ret);
>  err:
> -	if (object_list != NULL) {
> -		for (i = 0; i < pinned; i++)
> -			i915_gem_object_unpin(object_list[i]);
> +	for (i = 0; i < pinned; i++)
> +		i915_gem_object_unpin(object_list[i]);
> +
> +	for (i = 0; i < args->buffer_count; i++)
> +		drm_gem_object_unreference(object_list[i]);
>  
> -		for (i = 0; i < args->buffer_count; i++)
> -			drm_gem_object_unreference(object_list[i]);
> -	}
>  	mutex_unlock(&dev->struct_mutex);
>  
>  pre_mutex_err:
> --
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-- 
Eric Anholt
eric@...olt.net                         eric.anholt@...el.com



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