linux-kernel - Re: [PATCH] telephony: fix return value

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Date:	Fri, 29 Oct 2010 11:42:02 +0200 (CEST)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Nicolas Kaiser <nikai@...ai.net>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] telephony: fix return value

On Tue, 26 Oct 2010, Nicolas Kaiser wrote:

> If copy_from_user fails, the return value gets overwritten.
> 
> Signed-off-by: Nicolas Kaiser <nikai@...ai.net>
> ---
>  drivers/telephony/ixj.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/telephony/ixj.c b/drivers/telephony/ixj.c
> index 0d236f4..2d1280a 100644
> --- a/drivers/telephony/ixj.c
> +++ b/drivers/telephony/ixj.c
> @@ -6581,7 +6581,8 @@ static long do_ixj_ioctl(struct file *file_p, unsigned int cmd, unsigned long ar
>  	case IXJCTL_SET_FILTER:
>  		if (copy_from_user(&jf, argp, sizeof(jf))) 
>  			retval = -EFAULT;
> -		retval = ixj_init_filter(j, &jf);
> +		else
> +			retval = ixj_init_filter(j, &jf);
>  		break;
>  	case IXJCTL_SET_FILTER_RAW:
>  		if (copy_from_user(&jfr, argp, sizeof(jfr))) 

Applied, thanks Nicolas.

-- 
Jiri Kosina
SUSE Labs, Novell Inc.
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