linux-kernel - [tip:x86/urgent] arch/x86/pci: use kasprintf

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Message-ID: <tip-b46fc5f235be04a7f77fb2af1d8cb809889c25c1@git.kernel.org>
Date:	Mon, 24 May 2010 23:07:07 GMT
From:	tip-bot for Julia Lawall <julia@...u.dk>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, julia@...u.dk, hpa@...or.com,
	mingo@...hat.com, akpm@...ux-foundation.org, tglx@...utronix.de,
	hpa@...ux.intel.com
Subject: [tip:x86/urgent] arch/x86/pci: use kasprintf

Commit-ID:  b46fc5f235be04a7f77fb2af1d8cb809889c25c1
Gitweb:     http://git.kernel.org/tip/b46fc5f235be04a7f77fb2af1d8cb809889c25c1
Author:     Julia Lawall <julia@...u.dk>
AuthorDate: Mon, 24 May 2010 12:13:16 -0700
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Mon, 24 May 2010 13:31:45 -0700

arch/x86/pci: use kasprintf

kasprintf combines kmalloc and sprintf, and takes care of the size
calculation itself.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression a,flag;
expression list args;
statement S;
@@

  a =
-  \(kmalloc\|kzalloc\)(...,flag)
+  kasprintf(flag,args)
  <... when != a
  if (a == NULL || ...) S
  ...>
- sprintf(a,args);
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>
LKML-Reference: <201005241913.o4OJDG3R010871@...p1.linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
---
 arch/x86/pci/acpi.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 31930fd..7c0ad63 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -207,10 +207,9 @@ get_current_resources(struct acpi_device *device, int busnum,
 	if (!info.res)
 		goto res_alloc_fail;
 
-	info.name = kmalloc(16, GFP_KERNEL);
+	info.name = kasprintf(GFP_KERNEL, "PCI Bus %04x:%02x", domain, busnum);
 	if (!info.name)
 		goto name_alloc_fail;
-	sprintf(info.name, "PCI Bus %04x:%02x", domain, busnum);
 
 	info.res_num = 0;
 	acpi_walk_resources(device->handle, METHOD_NAME__CRS, setup_resource,
--
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