linux-kernel - [PATCH] aic7xxx/aic7770 : Use kstrdup

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Date:	Tue, 10 Jun 2014 19:50:37 +0530
From:	Himangi Saraogi <himangi774@...il.com>
To:	Hannes Reinecke <hare@...e.de>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	julia.lawall@...6.fr
Subject: [PATCH] aic7xxx/aic7770 : Use kstrdup

Use kstrdup when the goal of an allocation is copy a string into the
allocated region.

The semantic patch that makes this change is as follows:

// <smpl>
@@
expression from,to;
expression flag,E1,E2;
statement S;
@@

-  to = kmalloc(strlen(from) + 1,flag);
+  to = kstrdup(from, flag);
   ... when != \(from = E1 \| to = E1 \)
   if (to==NULL || ...) S
   ... when != \(from = E2 \| to = E2 \)
-  strcpy(to, from);
// </smpl>

Signed-off-by: Himangi Saraogi <himangi774@...il.com>
Acked-by: Julia Lawall <julia.lawall@...6.fr>
---
 drivers/scsi/aic7xxx/aic7770_osm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index 0cb8ef6..3d401d0 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -85,10 +85,9 @@ aic7770_probe(struct device *dev)
 	int	error;
 
 	sprintf(buf, "ahc_eisa:%d", eisaBase >> 12);
-	name = kmalloc(strlen(buf) + 1, GFP_ATOMIC);
+	name = kstrdup(buf, GFP_ATOMIC);
 	if (name == NULL)
 		return (ENOMEM);
-	strcpy(name, buf);
 	ahc = ahc_alloc(&aic7xxx_driver_template, name);
 	if (ahc == NULL)
 		return (ENOMEM);
-- 
1.9.1

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