linux-kernel - RE: [PATCH] [SCSI] aacraid: Use kmemdup rather than duplicating its implementation

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Date:	Tue, 22 Nov 2011 06:24:01 -0800
From:	"Mark Salyzyn" <mark_salyzyn@...xyratex.com>
To:	"Thomas Meyer" <thomas@...3r.de>, <JBottomley@...allels.com>,
	<linux-scsi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Cc:	"Achim Leubner" <Achim_Leubner@...-sierra.com>,
	"Mahesh Rajashekhara" <Mahesh_Rajashekhara@...-sierra.com>
Subject: RE: [PATCH] [SCSI] aacraid: Use kmemdup rather than duplicating its implementation

Ack

This driver is maintained by Achim Leubner
<Achim_Leubner@...-sierra.com> and Mahesh Rajashekhara
<Mahesh_Rajashekhara@...-sierra.com>. I have added them so that either
one of them can have the opportunity to respond.

Sincerely -- Mark Salyzyn

-----Original Message-----
From: linux-scsi-owner@...r.kernel.org
[mailto:linux-scsi-owner@...r.kernel.org] On Behalf Of Thomas Meyer
Sent: Thursday, November 17, 2011 5:44 PM
To: JBottomley@...allels.com; linux-scsi@...r.kernel.org;
linux-kernel@...r.kernel.org
Subject: [PATCH] [SCSI] aacraid: Use kmemdup rather than duplicating its
implementation

The semantic patch that makes this change is available
in scripts/coccinelle/api/memdup.cocci.

Signed-off-by: Thomas Meyer <thomas@...3r.de>
---

diff -u -p a/drivers/scsi/aacraid/commctrl.c
b/drivers/scsi/aacraid/commctrl.c
--- a/drivers/scsi/aacraid/commctrl.c 2011-11-07 19:38:06.463566391
+0100
+++ b/drivers/scsi/aacraid/commctrl.c 2011-11-08 10:53:23.848146953
+0100
@@ -631,15 +631,14 @@ static int aac_send_raw_srb(struct aac_d
 			}
 		} else {
 			struct user_sgmap* usg;
-			usg = kmalloc(actual_fibsize - sizeof(struct
aac_srb)
-			  + sizeof(struct sgmap), GFP_KERNEL);
+			usg = kmemdup(upsg,
+				      actual_fibsize - sizeof(struct
aac_srb) + sizeof(struct sgmap),
+				      GFP_KERNEL);
 			if (!usg) {
 				dprintk((KERN_DEBUG"aacraid: Allocation
error in Raw SRB command\n"));
 				rcode = -ENOMEM;
 				goto cleanup;
 			}
-			memcpy (usg, upsg, actual_fibsize -
sizeof(struct aac_srb)
-			  + sizeof(struct sgmap));
 			actual_fibsize = actual_fibsize64;
 
 			for (i = 0; i < usg->count; i++) {
--
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