From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764183AbZE0Hla (ORCPT ); Wed, 27 May 2009 03:41:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761648AbZE0HiH (ORCPT ); Wed, 27 May 2009 03:38:07 -0400 Received: from claw.goop.org ([74.207.240.146]:41718 "EHLO claw.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761524AbZE0HiF (ORCPT ); Wed, 27 May 2009 03:38:05 -0400 From: Jeremy Fitzhardinge To: Ingo Molnar Cc: the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel , Greg KH , Jens Axboe , Chris Wright , kurt.hackel@oracle.com, Andrew Morton , Ky Srinivasan , Beulich , Linus Torvalds , Avi Kivity , Ian Campbell , Jeremy Fitzhardinge Subject: [PATCH 10/17] xen: pre-initialize legacy irqs early Date: Wed, 27 May 2009 00:37:23 -0700 Message-Id: <1243409850-21577-11-git-send-email-jeremy@goop.org> X-Mailer: git-send-email 1.6.0.6 In-Reply-To: <1243409850-21577-1-git-send-email-jeremy@goop.org> References: <1243409850-21577-1-git-send-email-jeremy@goop.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ian Campbell Various legacy devices, such as IDE, assume their legacy interrupts are already initialized and are immediately usable. Pre-initialize all the legacy interrupts. [ Impact: ISA/legacy device compat ] Signed-off-by: Ian Campbell Signed-off-by: Jeremy Fitzhardinge --- arch/x86/xen/pci.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/arch/x86/xen/pci.c b/arch/x86/xen/pci.c index af4e898..402a5bd 100644 --- a/arch/x86/xen/pci.c +++ b/arch/x86/xen/pci.c @@ -63,9 +63,9 @@ int xen_register_gsi(u32 gsi, int triggering, int polarity) void __init xen_setup_pirqs(void) { -#ifdef CONFIG_ACPI int irq; +#ifdef CONFIG_ACPI /* * Set up acpi interrupt in acpi_gbl_FADT.sci_interrupt. */ @@ -77,4 +77,8 @@ void __init xen_setup_pirqs(void) /* Blerk. */ acpi_gbl_FADT.sci_interrupt = irq; #endif + + /* Pre-allocate legacy irqs */ + for (irq = 0; irq < NR_IRQS_LEGACY; irq++) + xen_allocate_pirq(irq); } -- 1.6.0.6