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

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Message-Id: <20200820185149.932178-1-alex.dewar90@gmail.com>
Date:   Thu, 20 Aug 2020 19:51:49 +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
Cc:     Alex Dewar <alex.dewar90@...il.com>
Subject: [PATCH] scsi: qla2xxx: Remove unnecessary call to memset

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>
---
 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;
-- 
2.28.0