linux-kernel - Re: [PATCH 3/6] IDE: ide-cd: fix test unsigned var

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Message-Id: <200804170040.07397.bzolnier@gmail.com>
Date:	Thu, 17 Apr 2008 00:40:07 +0200
From:	Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To:	Roel Kluin <12o3l@...cali.nl>
Cc:	linux-ide@...r.kernel.org, lkml <linux-kernel@...r.kernel.org>,
	Borislav Petkov <petkovbb@...il.com>
Subject: Re: [PATCH 3/6] IDE: ide-cd: fix test unsigned var < 0


Hi,

On Wednesday 16 April 2008, Roel Kluin wrote:
> Is this the right fix in this case?

Yes, but it seems that 'valid' is only written to
so it may be as well removed completely.

Care to update the patch?

Thanks,
Bart

> ---
> valid is unsigned and cannot be below 0.,
>     
> Signed-off-by: Roel Kluin <12o3l@...cali.nl>
> ---
> diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
> index c8d0e87..a60f5df 100644
> --- a/drivers/ide/ide-cd.c
> +++ b/drivers/ide/ide-cd.c
> @@ -182,8 +182,6 @@ void cdrom_analyze_sense_data(ide_drive_t *drive,
>  			sector &= ~(bio_sectors -1);
>  			valid = (sector - failed_command->sector) << 9;
>  
> -			if (valid < 0)
> -				valid = 0;
>  			if (sector < get_capacity(info->disk) &&
>  				drive->probed_capacity - sector < 4 * 75) {
>  				set_capacity(info->disk, sector);
--
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