linux-kernel - Re: [1/9] driver core fixes: make_class

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Date:	Fri, 22 Sep 2006 11:58:02 +0200
From:	Rolf Eike Beer <eike-kernel@...tec.de>
To:	Cornelia Huck <cornelia.huck@...ibm.com>
Cc:	Greg K-H <greg@...ah.com>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [1/9] driver core fixes: make_class_name() retval check

Cornelia Huck wrote:
> From: Cornelia Huck <cornelia.huck@...ibm.com>
>
> Make make_class_name() return NULL on error and fixup callers in the
> driver core.

> @@ -409,8 +409,11 @@ static int make_deprecated_class_device_
>  		return 0;
>
>  	class_name = make_class_name(class_dev->class->name, &class_dev->kobj);
> -	error = sysfs_create_link(&class_dev->dev->kobj, &class_dev->kobj,
> -				  class_name);
> +	if (!class_name)
> +		error = sysfs_create_link(&class_dev->dev->kobj,
> +					  &class_dev->kobj, class_name);
> +	else
> +		error = -ENOMEM;
>  	kfree(class_name);
>  	return error;
>  }

Either this is inverse of what you wanted to do or just calling 
sysfs_create_link(..., NULL) would make it clearer for readers.

Eike

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