linux-kernel - Re: [Linux-fbdev-devel] [PATCH] drivers: process failure of sysfs_create

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Date:	Mon, 10 Nov 2008 22:30:35 +0100 (CET)
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Jianjun Kong <jianjun@...ux.org>
cc:	spock@...too.org, linux-fbdev-devel@...ts.sourceforge.net,
	Linux-Kernel-Mailing-List <linux-kernel@...r.kernel.org>
Subject: Re: [Linux-fbdev-devel] [PATCH] drivers: process failure of
 sysfs_create_group()

On Mon, 10 Nov 2008, Jianjun Kong wrote:
> drivers: drivers/video/uvesafb.c:
> When fail to call sysfs_create_group(), it should recycle resources and return the error.
> This patch fix for processing failure of sysfs_create_group().

IIRC, the reasoning behind the current code is that a failure to create sysfs
entries is not critical, as it doesn't impact the correct functioning of the
core of the driver.

> Signed-off-by: Jianjun Kong <jianjun@...ux.org>
> ---
>  drivers/video/uvesafb.c |    6 +++++-
>  1 files changed, 5 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/video/uvesafb.c b/drivers/video/uvesafb.c
> index 6c2d37f..a78d4d9 100644
> --- a/drivers/video/uvesafb.c
> +++ b/drivers/video/uvesafb.c
> @@ -1811,12 +1811,16 @@ static int __devinit uvesafb_probe(struct platform_device *dev)
>  			info->fix.id);
>  
>  	err = sysfs_create_group(&dev->dev.kobj, &uvesafb_dev_attgrp);
> -	if (err != 0)
> +	if (err != 0) {
>  		printk(KERN_WARNING "fb%d: failed to register attributes\n",
>  			info->node);
> +		goto out_frame;
> +	}
>  
>  	return 0;
>  
> +our_frame:
> +	unregister_framebuffer(info);
>  out_reg:
>  	release_region(0x3c0, 32);
>  out_unmap:

Gr{oetje,eeting}s,

						Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
							    -- Linus Torvalds
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