linux-kernel - Re: [PATCH] scsi: qla2xxx: Remove unnecessary call to memset

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Date:   Mon, 24 Aug 2020 22:42:47 +0100
From:   Alex Dewar <alex.dewar90@...il.com>
To:     Nilesh Javali <njavali@...vell.com>,
        GR-QLogic-Storage-Upstream@...vell.com,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: qla2xxx: Remove unnecessary call to memset

On 2020-08-20 19:51, Alex Dewar wrote:
> In qla25xx_set_els_cmds_supported(), a call is made to
> dma_alloc_coherent() followed by zeroing the memory with memset. This is
> unnecessary as dma_alloc_coherent() already zeros memory. Remove.
>
> Issue identified with Coccinelle.
>
> Signed-off-by: Alex Dewar <alex.dewar90@...il.com>
Gentle ping?
> ---
>   drivers/scsi/qla2xxx/qla_mbx.c | 2 --
>   1 file changed, 2 deletions(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
> index 226f1428d3e5..e00f604bbf7a 100644
> --- a/drivers/scsi/qla2xxx/qla_mbx.c
> +++ b/drivers/scsi/qla2xxx/qla_mbx.c
> @@ -4925,8 +4925,6 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
>   		return QLA_MEMORY_ALLOC_FAILED;
>   	}
>   
> -	memset(els_cmd_map, 0, ELS_CMD_MAP_SIZE);
> -
>   	/* List of Purex ELS */
>   	cmd_opcode[0] = ELS_FPIN;
>   	cmd_opcode[1] = ELS_RDP;