linux-kernel - [PATCH 10/10] arch/powerpc/platforms/iseries: Use kstrdup

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Date:	Fri, 14 May 2010 21:31:26 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...ts.ozlabs.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH 10/10] arch/powerpc/platforms/iseries: Use kstrdup

From: Julia Lawall <julia@...u.dk>

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:
(http://coccinelle.lip6.fr/)

// <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: Julia Lawall <julia@...u.dk>

---
 arch/powerpc/platforms/iseries/vio.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff -u -p a/arch/powerpc/platforms/iseries/vio.c b/arch/powerpc/platforms/iseries/vio.c
--- a/arch/powerpc/platforms/iseries/vio.c
+++ b/arch/powerpc/platforms/iseries/vio.c
@@ -87,12 +87,11 @@ static struct device_node *new_node(cons
 
 	if (!np)
 		return NULL;
-	np->full_name = kmalloc(strlen(path) + 1, GFP_KERNEL);
+	np->full_name = kstrdup(path, GFP_KERNEL);
 	if (!np->full_name) {
 		kfree(np);
 		return NULL;
 	}
-	strcpy(np->full_name, path);
 	of_node_set_flag(np, OF_DYNAMIC);
 	kref_init(&np->kref);
 	np->parent = of_node_get(parent);
--
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