linux-kernel - [PATCH] megaraid_sas: combine kmalloc+memset into kzalloc

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Date:	Fri, 24 Aug 2012 23:27:35 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	adam radford <aradford@...il.com>,
	Neela Syam Kolli <megaraidlinux@....com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] megaraid_sas: combine kmalloc+memset into kzalloc

Use kzalloc rather than kmalloc followed by memset with 0.

Generated by: scripts/coccinelle/api/alloc/kzalloc-simple.cocci

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---
 drivers/scsi/megaraid/megaraid_sas_fusion.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

--- linux.orig/drivers/scsi/megaraid/megaraid_sas_fusion.c	2012-06-07 05:39:57.418846382 +0800
+++ linux/drivers/scsi/megaraid/megaraid_sas_fusion.c	2012-08-24 23:25:02.261560445 +0800
@@ -461,8 +461,8 @@ megasas_alloc_cmds_fusion(struct megasas
 	 * Allocate the dynamic array first and then allocate individual
 	 * commands.
 	 */
-	fusion->cmd_list = kmalloc(sizeof(struct megasas_cmd_fusion *)
-				   *max_cmd, GFP_KERNEL);
+	fusion->cmd_list = kzalloc(sizeof(struct megasas_cmd_fusion *)
+				   * max_cmd, GFP_KERNEL);
 
 	if (!fusion->cmd_list) {
 		printk(KERN_DEBUG "megasas: out of memory. Could not alloc "
@@ -470,9 +470,6 @@ megasas_alloc_cmds_fusion(struct megasas
 		goto fail_cmd_list;
 	}
 
-	memset(fusion->cmd_list, 0, sizeof(struct megasas_cmd_fusion *)
-	       *max_cmd);
-
 	max_cmd = instance->max_fw_cmds;
 	for (i = 0; i < max_cmd; i++) {
 		fusion->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd_fusion),
--
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