linux-kernel - [PATCH 16/20] drivers/platform/x86: Use kzalloc

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Message-ID: <Pine.LNX.4.64.1005132206020.6282@ask.diku.dk>
Date:	Thu, 13 May 2010 22:06:20 +0200 (CEST)
From:	Julia Lawall <julia@...u.dk>
To:	Jonathan Woithe <jwoithe@...sics.adelaide.edu.au>,
	Matthew Garrett <mjg@...hat.com>,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH 16/20] drivers/platform/x86: Use kzalloc

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

Use kzalloc rather than the combination of kmalloc and memset.

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

// <smpl>
@@
expression x,size,flags;
statement S;
@@

-x = kmalloc(size,flags);
+x = kzalloc(size,flags);
 if (x == NULL) S
-memset(x, 0, size);
// </smpl>

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 drivers/platform/x86/fujitsu-laptop.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff -u -p a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
--- a/drivers/platform/x86/fujitsu-laptop.c
+++ b/drivers/platform/x86/fujitsu-laptop.c
@@ -1090,10 +1090,9 @@ static int __init fujitsu_init(void)
 	if (acpi_disabled)
 		return -ENODEV;
 
-	fujitsu = kmalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
+	fujitsu = kzalloc(sizeof(struct fujitsu_t), GFP_KERNEL);
 	if (!fujitsu)
 		return -ENOMEM;
-	memset(fujitsu, 0, sizeof(struct fujitsu_t));
 	fujitsu->keycode1 = KEY_PROG1;
 	fujitsu->keycode2 = KEY_PROG2;
 	fujitsu->keycode3 = KEY_PROG3;
@@ -1150,12 +1149,11 @@ static int __init fujitsu_init(void)
 
 	/* Register hotkey driver */
 
-	fujitsu_hotkey = kmalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
+	fujitsu_hotkey = kzalloc(sizeof(struct fujitsu_hotkey_t), GFP_KERNEL);
 	if (!fujitsu_hotkey) {
 		ret = -ENOMEM;
 		goto fail_hotkey;
 	}
-	memset(fujitsu_hotkey, 0, sizeof(struct fujitsu_hotkey_t));
 
 	result = acpi_bus_register_driver(&acpi_fujitsu_hotkey_driver);
 	if (result < 0) {
--
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