linux-kernel - Re: [PATCH 1/3] scsi: ufs: Use devm_kcalloc() in ufshcd_memory

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Date:   Wed, 26 Apr 2017 10:52:50 -0700
From:   Subhash Jadavani <subhashj@...eaurora.org>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     linux-scsi@...r.kernel.org,
        "James E. J. Bottomley" <jejb@...ux.vnet.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Vinayak Holikatti <vinholikatti@...il.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org, linux-scsi-owner@...r.kernel.org
Subject: Re: [PATCH 1/3] scsi: ufs: Use devm_kcalloc() in
 ufshcd_memory_alloc()

On 2017-04-25 13:26, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Tue, 25 Apr 2017 21:45:25 +0200
> 
> * A multiplication for the size determination of a memory allocation
>   indicated that an array data structure should be processed.
>   Thus use the corresponding function "devm_kcalloc".
> 
> * Replace the specification of a data structure by a pointer 
> dereference
>   to make the corresponding size determination a bit safer according to
>   the Linux coding style convention.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> ---
>  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 9ef8ce7f01a2..ce385911a20e 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -3270,8 +3270,7 @@ static int ufshcd_memory_alloc(struct ufs_hba 
> *hba)
>  	}
> 
>  	/* Allocate memory for local reference block */
> -	hba->lrb = devm_kzalloc(hba->dev,
> -				hba->nutrs * sizeof(struct ufshcd_lrb),
> +	hba->lrb = devm_kcalloc(hba->dev, hba->nutrs, sizeof(*hba->lrb),
>  				GFP_KERNEL);
>  	if (!hba->lrb) {
>  		dev_err(hba->dev, "LRB Memory allocation failed\n");

Looks good to me.
Reviewed-by: Subhash Jadavani <subhashj@...eaurora.org>

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