Re: [Dri-devel][PATCH] sysfs simple class support for DRI char device

[Greg KH <greg@kroah.com>]

On Fri, Mar 05, 2004 at 12:14:15PM -0800, Leann Ogasawara wrote:
> Hi All,
> 
> Patch adds sysfs simple class support for DRI character device (Major
> 226).  Also, adds some error checking.  Feedback appreciated.  Thanks,

Looks good, but...

>  
>  	DRM_DEBUG("\n");
> -	if (register_chrdev(DRM_MAJOR, "drm", &DRM(stub_fops)))
> +	ret1 = register_chrdev(DRM_MAJOR, "drm", &DRM(stub_fops));
> +	if (!ret1) {
> +		drm_class = class_simple_create(THIS_MODULE, "drm");
> +		if (IS_ERR(drm_class)) {
> +			printk (KERN_ERR "Error creating drm class.\n");
> +			unregister_chrdev(DRM_MAJOR, "drm");
> +			return PTR_ERR(drm_class);
> +		}
> +	}
> +	else if (ret1 == -EBUSY)
>  		i = (struct drm_stub_info *)inter_module_get("drm");
> +	else
> +		return -1;

If ret1 == -EBUSY then we never create the "drm" class_simple structure,
right?  That's not good.

Care to fix this up and send a new patch?

thanks,

greg k-h