From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751630Ab1GMFOh (ORCPT ); Wed, 13 Jul 2011 01:14:37 -0400 Received: from mga09.intel.com ([134.134.136.24]:9791 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750705Ab1GMFOf (ORCPT ); Wed, 13 Jul 2011 01:14:35 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.65,523,1304319600"; d="scan'208";a="27048165" From: Huang Ying To: Len Brown Cc: linux-kernel@vger.kernel.org, Andi Kleen , Tony Luck , ying.huang@intel.com, linux-acpi@vger.kernel.org Subject: [PATCH 02/17] ACPI, APEI, ERST, Prevent erst_dbg from loading if ERST is disabled Date: Wed, 13 Jul 2011 13:14:13 +0800 Message-Id: <1310534068-30547-3-git-send-email-ying.huang@intel.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1310534068-30547-1-git-send-email-ying.huang@intel.com> References: <1310534068-30547-1-git-send-email-ying.huang@intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org erst_dbg module can not work when ERST is disabled. So disable module loading to provide clearer information to user. Signed-off-by: Huang Ying --- drivers/acpi/apei/erst-dbg.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -213,6 +213,10 @@ static struct miscdevice erst_dbg_dev = static __init int erst_dbg_init(void) { + if (erst_disable) { + pr_info(ERST_DBG_PFX "ERST support is disabled.\n"); + return -ENODEV; + } return misc_register(&erst_dbg_dev); }