linux-kernel - [PATCH -next] scsi: ufs: Use kmemdup in ufshcd_read_string

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Date:   Sat, 31 Aug 2019 12:44:24 +0000
From:   YueHaibing <yuehaibing@...wei.com>
To:     Alim Akhtar <alim.akhtar@...sung.com>,
        Avri Altman <avri.altman@....com>,
        Pedro Sousa <pedrom.sousa@...opsys.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Tomas Winkler <tomas.winkler@...el.com>,
        Subhash Jadavani <subhashj@...eaurora.org>
CC:     YueHaibing <yuehaibing@...wei.com>, <linux-scsi@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: [PATCH -next] scsi: ufs: Use kmemdup in ufshcd_read_string_desc()

Use kmemdup rather than duplicating its implementation

Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/scsi/ufs/ufshcd.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index acf298da054c..6d5e2f5d8468 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -3309,12 +3309,11 @@ int ufshcd_read_string_desc(struct ufs_hba *hba, u8 desc_index,
 		str[ret++] = '\0';
 
 	} else {
-		str = kzalloc(uc_str->len, GFP_KERNEL);
+		str = kmemdup(uc_str, uc_str->len, GFP_KERNEL);
 		if (!str) {
 			ret = -ENOMEM;
 			goto out;
 		}
-		memcpy(str, uc_str, uc_str->len);
 		ret = uc_str->len;
 	}
 out: