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

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Message-ID: <alpine.LRH.2.21.9999.2008260934420.31539@irv1user01.caveonetworks.com>
Date:   Wed, 26 Aug 2020 09:34:53 -0700
From:   Arun Easi <aeasi@...vell.com>
To:     Alex Dewar <alex.dewar90@...il.com>
CC:     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 Mon, 24 Aug 2020, 2:42pm, Alex Dewar wrote:

> 
> 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;
> 
> 

Looks good.

Regards,
-Arun