linux-kernel - [scsi] scsi: ufs: don't check unsigned type for a negative value

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Message-Id: <20170312102202.9889-1-tomas.winkler@intel.com>
Date:   Sun, 12 Mar 2017 12:22:02 +0200
From:   Tomas Winkler <tomas.winkler@...el.com>
To:     James Bottomley <James.Bottomley@...senPartnership.com>,
        "Martin K . Petersen" <martin.petersen@...cle.com>,
        Vinayak Holikatti <vinholikatti@...il.com>
Cc:     Christoph Hellwig <hch@....de>,
        Yaniv Gardi <ygardi@...eaurora.org>,
        Subhash Jadavani <subhashj@...eaurora.org>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tomas Winkler <tomas.winkler@...el.com>
Subject: [scsi] scsi: ufs: don't check unsigned type for a negative value

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@...el.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);
-- 
2.9.3