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

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Message-ID: <5B8DA87D05A7694D9FA63FD143655C1B9DCA9308@hasmsx108.ger.corp.intel.com>
Date:   Sat, 31 Aug 2019 19:37:07 +0000
From:   "Winkler, Tomas" <tomas.winkler@...el.com>
To:     YueHaibing <yuehaibing@...wei.com>,
        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>,
        Subhash Jadavani <subhashj@...eaurora.org>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [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>
LGTM, ACK.
Tomas
 
> ---
>  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:
> 
>