linux-kernel - Re: [PATCH 19/26] IB/ocrdma: Improve another size determination in ocrdma_alloc

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Message-ID: <20170309120314.GK3307@yuval-lap>
Date:   Thu, 9 Mar 2017 14:03:15 +0200
From:   Yuval Shaia <yuval.shaia@...cle.com>
To:     SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:     linux-rdma@...r.kernel.org,
        Devesh Sharma <devesh.sharma@...gotech.com>,
        Doug Ledford <dledford@...hat.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Selvin Xavier <selvin.xavier@...gotech.com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 19/26] IB/ocrdma: Improve another size determination in
 ocrdma_alloc_mr()

On Wed, Mar 08, 2017 at 02:20:42PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Wed, 8 Mar 2017 09:54:42 +0100
> 
> Replace the specification of a data type by a pointer dereference
> as the parameter for the operator "sizeof" 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/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
> index 330617e1ef75..05d55d361cfe 100644
> --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
> +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
> @@ -3030,7 +3030,7 @@ struct ib_mr *ocrdma_alloc_mr(struct ib_pd *ibpd,
>  	if (!mr)
>  		return ERR_PTR(-ENOMEM);
>  
> -	mr->pages = kcalloc(max_num_sg, sizeof(u64), GFP_KERNEL);
> +	mr->pages = kcalloc(max_num_sg, sizeof(*mr->pages), GFP_KERNEL);

Reviewed-by: Yuval Shaia <yuval.shaia@...cle.com>

>  	if (!mr->pages) {
>  		status = -ENOMEM;
>  		goto pl_err;
> -- 
> 2.12.0
> 
> --
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