linux-kernel - Re: [PATCH 5/7] driver core: Use sysfs_rename_link in device

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Date:	Tue, 12 Jan 2010 11:34:49 -0600
From:	"Serge E. Hallyn" <serue@...ibm.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>,
	Kay Sievers <kay.sievers@...y.org>,
	linux-kernel@...r.kernel.org, Tejun Heo <tj@...nel.org>,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	linux-fsdevel@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>,
	Benjamin LaHaise <bcrl@...et.ca>,
	"Eric W. Biederman" <ebiederm@...stanetworks.com>
Subject: Re: [PATCH 5/7] driver core: Use sysfs_rename_link in device_rename

Quoting Eric W. Biederman (ebiederm@...ssion.com):
> From: Eric W. Biederman <ebiederm@...ssion.com>
> 
> Don't open code the renaming of symlinks in sysfs
> instead use the new helper function sysfs_rename_link
> 
> Signed-off-by: Eric W. Biederman <ebiederm@...stanetworks.com>

Acked-by: Serge Hallyn <serue@...ibm.com>

> ---
>  drivers/base/core.c |   18 ++++++------------
>  1 files changed, 6 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/base/core.c b/drivers/base/core.c
> index 2820257..ba66394 100644
> --- a/drivers/base/core.c
> +++ b/drivers/base/core.c
> @@ -1574,22 +1574,16 @@ int device_rename(struct device *dev, char *new_name)
>  	if (old_class_name) {
>  		new_class_name = make_class_name(dev->class->name, &dev->kobj);
>  		if (new_class_name) {
> -			error = sysfs_create_link_nowarn(&dev->parent->kobj,
> -							 &dev->kobj,
> -							 new_class_name);
> -			if (error)
> -				goto out;
> -			sysfs_remove_link(&dev->parent->kobj, old_class_name);
> +			error = sysfs_rename_link(&dev->parent->kobj,
> +						  &dev->kobj,
> +						  old_class_name,
> +						  new_class_name);
>  		}
>  	}
>  #else
>  	if (dev->class) {
> -		error = sysfs_create_link_nowarn(&dev->class->p->class_subsys.kobj,
> -						 &dev->kobj, dev_name(dev));
> -		if (error)
> -			goto out;
> -		sysfs_remove_link(&dev->class->p->class_subsys.kobj,
> -				  old_device_name);
> +		error = sysfs_rename_link(&dev->class->p->class_subsys.kobj,
> +					  &dev->kobj, old_device_name, new_name);
>  	}
>  #endif
> 
> -- 
> 1.6.5.2.143.g8cc62
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