From patchwork Thu Oct 22 12:03:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen Yu X-Patchwork-Id: 7464661 Return-Path: X-Original-To: patchwork-linux-acpi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id D8CC8BEEA4 for ; Thu, 22 Oct 2015 12:01:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0303120935 for ; Thu, 22 Oct 2015 12:01:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0178120943 for ; Thu, 22 Oct 2015 12:01:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757056AbbJVMAb (ORCPT ); Thu, 22 Oct 2015 08:00:31 -0400 Received: from mga11.intel.com ([192.55.52.93]:27736 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756982AbbJVMAa (ORCPT ); Thu, 22 Oct 2015 08:00:30 -0400 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga102.fm.intel.com with ESMTP; 22 Oct 2015 05:00:29 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,181,1444719600"; d="scan'208";a="816938231" Received: from unknown (HELO localhost.localdomain.sh.intel.com) ([10.239.160.87]) by fmsmga001.fm.intel.com with ESMTP; 22 Oct 2015 05:00:28 -0700 From: Chen Yu To: rjw@rjwysocki.net, lenb@kernel.org Cc: rui.zhang@intel.com, lv.zheng@intel.com, linux-acpi@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Chen Yu , Subject: [PATCH 1/3] ACPI: Using correct irq when uninstalling acpi irq handler Date: Thu, 22 Oct 2015 20:03:08 +0800 Message-Id: <1445515388-31251-1-git-send-email-yu.c.chen@intel.com> X-Mailer: git-send-email 1.8.4.2 Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Currently when system is trying to uninstall the acpi irq handler, it uses the acpi_gbl_FADT.sci_interrupt directly. But acpi irq handler is actually installed by mapped irq in acpi_os_install_interrupt_handler, so this patch fixes this problem by using the mapped irq returned from acpi_gsi_to_irq. Cc: # 2.6.39+ Acked-by: Lv Zheng Signed-off-by: Chen Yu --- drivers/acpi/osl.c | 10 +++++++--- include/linux/acpi.h | 3 +++ 2 files changed, 10 insertions(+), 3 deletions(-) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 739a4a6..2e9eccf 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -81,6 +81,7 @@ static struct workqueue_struct *kacpid_wq; static struct workqueue_struct *kacpi_notify_wq; static struct workqueue_struct *kacpi_hotplug_wq; static bool acpi_os_initialized; +unsigned int acpi_sci_irq = INVALID_ACPI_IRQ; /* * This list of permanent mappings is for memory that may be accessed from @@ -856,17 +857,20 @@ acpi_os_install_interrupt_handler(u32 gsi, acpi_osd_handler handler, acpi_irq_handler = NULL; return AE_NOT_ACQUIRED; } + acpi_sci_irq = irq; return AE_OK; } -acpi_status acpi_os_remove_interrupt_handler(u32 irq, acpi_osd_handler handler) +acpi_status acpi_os_remove_interrupt_handler(u32 gsi, acpi_osd_handler handler) { - if (irq != acpi_gbl_FADT.sci_interrupt) + if ((gsi != acpi_gbl_FADT.sci_interrupt) || + IS_INVALID_ACPI_IRQ(acpi_sci_irq)) return AE_BAD_PARAMETER; - free_irq(irq, acpi_irq); + free_irq(acpi_sci_irq, acpi_irq); acpi_irq_handler = NULL; + acpi_sci_irq = INVALID_ACPI_IRQ; return AE_OK; } diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 43856d1..bad159c 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -193,6 +193,9 @@ int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base); void acpi_irq_stats_init(void); extern u32 acpi_irq_handled; extern u32 acpi_irq_not_handled; +extern unsigned int acpi_sci_irq; +#define INVALID_ACPI_IRQ ((unsigned)-1) +#define IS_INVALID_ACPI_IRQ(x) unlikely((x) == INVALID_ACPI_IRQ) extern int sbf_port; extern unsigned long acpi_realmode_flags;