Re: [patch 2.6.15-mm4] drivers/cdrom/cdrom.c fix incorrect test

[Jens Axboe]

On Sun, Jan 15 2006, Benoit Boissinot wrote:
> On Sat, Jan 14, 2006 at 11:49:26PM +0100, Benoit Boissinot wrote:
> > In cleanup-cdrom_ioctl.patch,
> > 
> > the test in CDROMREADTOCENTRY ioctl was changed from
> > 
> > if (!((requested_format == CDROM_MSF) || (requested_format == CDROM_LBA)))
> > 		return -EINVAL;
> > 
> > to
> > 
> > if (requested_format != CDROM_MSF || requested_format != CDROM_LBA)
> > 	return -EINVAL;
> > 
> > which is not equivalent with morgan's law.
> > 
> 
> sorry, it doesn't apply with -p1 correct patch below:
> 
> In cleanup-cdrom_ioctl.patch,
> the test in CDROMREADTOCENTRY ioctl was changed from
> 
> if (!((requested_format == CDROM_MSF) || (requested_format == CDROM_LBA)))
> 		return -EINVAL;
> to
> 
> if (requested_format != CDROM_MSF || requested_format != CDROM_LBA)
> 	return -EINVAL;
> 
> which is not equivalent with morgan's law.
> 
> Signed-off-by: Benoit Boissinot <benoit.boissinot@xxxxxxxxxxxx>
> 
> diff -Naurp -X Documentation/dontdiff ../linux/drivers/cdrom/cdrom.c drivers/cdrom/cdrom.c
> --- a/drivers/cdrom/cdrom.c	2006-01-14 16:11:43.000000000 +0100
> +++ b/drivers/cdrom/cdrom.c	2006-01-14 23:44:51.000000000 +0100
> @@ -2585,7 +2585,7 @@ static int cdrom_ioctl_read_tocentry(str
>  		return -EFAULT;
>  
>  	requested_format = entry.cdte_format;
> -	if (requested_format != CDROM_MSF || requested_format != CDROM_LBA)
> +	if (requested_format != CDROM_MSF && requested_format != CDROM_LBA)
>  		return -EINVAL;
>  	/* make interface to low-level uniform */
>  	entry.cdte_format = CDROM_MSF;

Good catch, thanks!

-- 
Jens Axboe

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