linux-kernel - Re: [PATCH 05/26] IB/ocrdma: Improve another size determination in ocrdma_mbx_query

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Date:   Wed, 8 Mar 2017 16:07:17 +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 05/26] IB/ocrdma: Improve another size determination in
 ocrdma_mbx_query_qp()

On Wed, Mar 08, 2017 at 01:50:59PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Tue, 7 Mar 2017 19:40:31 +0100
> 
> Replace the specification of a data structure 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_hw.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
> index 517a18e9351a..8122a1c7d2ae 100644
> --- a/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
> +++ b/drivers/infiniband/hw/ocrdma/ocrdma_hw.c
> @@ -2487,7 +2487,7 @@ int ocrdma_mbx_query_qp(struct ocrdma_dev *dev, struct ocrdma_qp *qp,
>  	if (status)
>  		goto mbx_err;
>  	rsp = (struct ocrdma_query_qp_rsp *)cmd;
> -	memcpy(param, &rsp->params, sizeof(struct ocrdma_qp_params));
> +	memcpy(param, &rsp->params, sizeof(*param));
>  mbx_err:
>  	kfree(cmd);
>  	return status;
> -- 

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

> 2.12.0
> 
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