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Re: [scsi] scsi: ufs: don't check unsigned type for a negative value

From Subhash Jadavani <subhashj@codeaurora.org>
Newsgroups linux.kernel
Subject Re: [scsi] scsi: ufs: don't check unsigned type for a negative value
Date 2017-03-14 01:20 +0100
Message-ID <tkIlX-or-3@gated-at.bofh.it> (permalink)
References <tk8Vc-8tV-7@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 2017-03-12 03:22, Tomas Winkler wrote:
> Fix compilation warning
> 
> drivers/scsi/ufs/ufshcd.c:7645:13: warning: comparison of unsigned
> expression < 0 is always false [-Wtype-limits]
> if ((value < UFS_PM_LVL_0) || (value >= UFS_PM_LVL_MAX))
> 
> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 1359913bf840..e8c26e6e6237 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -7642,7 +7642,7 @@ static inline ssize_t ufshcd_pm_lvl_store(struct
> device *dev,
>  	if (kstrtoul(buf, 0, &value))
>  		return -EINVAL;
> 
> -	if ((value < UFS_PM_LVL_0) || (value >= UFS_PM_LVL_MAX))
> +	if (value >= UFS_PM_LVL_MAX)
>  		return -EINVAL;
> 
>  	spin_lock_irqsave(hba->host->host_lock, flags);

LGTM.
Reviewed-by: Subhash Jadavani <subhashj@codaurora.org>

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Thread

[scsi] scsi: ufs: don't check unsigned type for a negative value Tomas Winkler <tomas.winkler@intel.com> - 2017-03-12 11:30 +0100
  Re: [scsi] scsi: ufs: don't check unsigned type for a negative value Subhash Jadavani <subhashj@codeaurora.org> - 2017-03-14 01:20 +0100
    Re: [scsi] scsi: ufs: don't check unsigned type for a negative value James Bottomley <James.Bottomley@HansenPartnership.com> - 2017-03-15 18:30 +0100
      Re: [scsi] scsi: ufs: don't check unsigned type for a negative value Subhash Jadavani <subhashj@codeaurora.org> - 2017-03-16 00:00 +0100
  Re: [scsi] scsi: ufs: don't check unsigned type for a negative value "Martin K. Petersen" <martin.petersen@oracle.com> - 2017-03-14 04:10 +0100

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