From mboxrd@z Thu Jan 1 00:00:00 1970 From: Axel Lin Subject: [PATCH] dell-wmi: fix a memory leak Date: Wed, 30 Jun 2010 17:25:46 +0800 Message-ID: <1277889946.30827.2.camel@mola> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from mail-iw0-f174.google.com ([209.85.214.174]:60837 "EHLO mail-iw0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751805Ab0F3JXY (ORCPT ); Wed, 30 Jun 2010 05:23:24 -0400 Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: linux-kernel Cc: Matthew Garrett , Len Brown , Dmitry Torokhov , =?ISO-8859-1?Q?M=E1rton_N=E9meth?= , platform-driver-x86@vger.kernel.org If dell_new_hk_type is true, dell_legacy_wmi_keymap will point to a memory allocated in setup_new_hk_map(). In this case, the memory is not freed in current implementation. This patch fixes the leak by kfree(dell_wmi_keymap) if dell_new_hk_type is true. Signed-off-by: Axel Lin --- drivers/platform/x86/dell-wmi.c | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-) diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c index 66f53c3..ee6452e 100644 --- a/drivers/platform/x86/dell-wmi.c +++ b/drivers/platform/x86/dell-wmi.c @@ -339,13 +339,18 @@ static int __init dell_wmi_init(void) acpi_video = acpi_video_backlight_support(); err = dell_wmi_input_setup(); - if (err) + if (err) { + if (dell_new_hk_type) + kfree(dell_wmi_keymap); return err; + } status = wmi_install_notify_handler(DELL_EVENT_GUID, dell_wmi_notify, NULL); if (ACPI_FAILURE(status)) { input_unregister_device(dell_wmi_input_dev); + if (dell_new_hk_type) + kfree(dell_wmi_keymap); printk(KERN_ERR "dell-wmi: Unable to register notify handler - %d\n", status); @@ -359,6 +364,8 @@ static void __exit dell_wmi_exit(void) { wmi_remove_notify_handler(DELL_EVENT_GUID); input_unregister_device(dell_wmi_input_dev); + if (dell_new_hk_type) + kfree(dell_wmi_keymap); } module_init(dell_wmi_init); -- 1.5.4.3