diff mbox

[-next] drm/i915: fix return value check of debugfs_create_file()

Message ID CAPgLHd-C925=6rEnQMMkPvHu6+w_BHcJ1-CG8PdK37XM9dzf_A@mail.gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Wei Yongjun Dec. 16, 2013, 6:13 a.m. UTC
From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

In case of error, the function debugfs_create_file() returns NULL
pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in
the return value check should be replaced with NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

Daniel Vetter Dec. 16, 2013, 10:05 a.m. UTC | #1
On Mon, Dec 16, 2013 at 02:13:25PM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> 
> In case of error, the function debugfs_create_file() returns NULL
> pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in
> the return value check should be replaced with NULL test.
> 
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Nice catch! Queued for -next, thanks for the patch.
-Daniel

> ---
>  drivers/gpu/drm/i915/i915_debugfs.c | 12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 7008aac..856e18b 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -1920,8 +1920,8 @@ static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
>  	info->dev = dev;
>  	ent = debugfs_create_file(info->name, S_IRUGO, root, info,
>  				  &i915_pipe_crc_fops);
> -	if (IS_ERR(ent))
> -		return PTR_ERR(ent);
> +	if (!ent)
> +		return -ENOMEM;
>  
>  	return drm_add_fake_info_node(minor, ent, info);
>  }
> @@ -2931,8 +2931,8 @@ static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
>  				  S_IRUSR,
>  				  root, dev,
>  				  &i915_forcewake_fops);
> -	if (IS_ERR(ent))
> -		return PTR_ERR(ent);
> +	if (!ent)
> +		return -ENOMEM;
>  
>  	return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
>  }
> @@ -2949,8 +2949,8 @@ static int i915_debugfs_create(struct dentry *root,
>  				  S_IRUGO | S_IWUSR,
>  				  root, dev,
>  				  fops);
> -	if (IS_ERR(ent))
> -		return PTR_ERR(ent);
> +	if (!ent)
> +		return -ENOMEM;
>  
>  	return drm_add_fake_info_node(minor, ent, fops);
>  }
>
Lespiau, Damien Dec. 16, 2013, 11:06 a.m. UTC | #2
On Mon, Dec 16, 2013 at 02:13:25PM +0800, Wei Yongjun wrote:
> From: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
> 
> In case of error, the function debugfs_create_file() returns NULL
> pointer not ERR_PTR() if debugfs is enabled. The IS_ERR() test in
> the return value check should be replaced with NULL test.
> 
> Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>

Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 7008aac..856e18b 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1920,8 +1920,8 @@  static int i915_pipe_crc_create(struct dentry *root, struct drm_minor *minor,
 	info->dev = dev;
 	ent = debugfs_create_file(info->name, S_IRUGO, root, info,
 				  &i915_pipe_crc_fops);
-	if (IS_ERR(ent))
-		return PTR_ERR(ent);
+	if (!ent)
+		return -ENOMEM;
 
 	return drm_add_fake_info_node(minor, ent, info);
 }
@@ -2931,8 +2931,8 @@  static int i915_forcewake_create(struct dentry *root, struct drm_minor *minor)
 				  S_IRUSR,
 				  root, dev,
 				  &i915_forcewake_fops);
-	if (IS_ERR(ent))
-		return PTR_ERR(ent);
+	if (!ent)
+		return -ENOMEM;
 
 	return drm_add_fake_info_node(minor, ent, &i915_forcewake_fops);
 }
@@ -2949,8 +2949,8 @@  static int i915_debugfs_create(struct dentry *root,
 				  S_IRUGO | S_IWUSR,
 				  root, dev,
 				  fops);
-	if (IS_ERR(ent))
-		return PTR_ERR(ent);
+	if (!ent)
+		return -ENOMEM;
 
 	return drm_add_fake_info_node(minor, ent, fops);
 }