linux-kernel - [PATCH 3/3] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding

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Date:	Mon, 4 Jun 2012 13:23:41 +0800
From:	Feng Tang <feng.tang@...el.com>
To:	Len Brown <lenb@...nel.org>
Cc:	<linux-kernel@...r.kernel.org>, <linux-acpi@...r.kernel.org>,
	<rui.zhang@...el.com>, <fazerxlo@...pl>, <x86@...nel.org>
Subject: [PATCH 3/3] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the
 timer overriding

>From cfca8634132c1b2f89c39f681ae2aa1fe227c9f5 Mon Sep 17 00:00:00 2001
From: Feng Tang <feng.tang@...el.com>
Date: Mon, 4 Jun 2012 11:06:35 +0800
Subject: [PATCH 3/3] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the
 timer overriding

This is the 2nd part of fix for kernel bugzilla 40002:
    "IRQ 0 assigned to VGA"
https://bugzilla.kernel.org/show_bug.cgi?id=40002

The root cause is the buggy FW, whose ACPI tables assign the GSI 16
to 2 irqs 0 and 16(VGA), and the VGA is the right owner of GSI 16.
So add a quirk to ignore the irq0 overriding GSI 16 for the
FUJITSU SIEMENS AMILO PRO V2030 platform will solve this issue.

Reported-and-tested-by: Szymon Kowalczyk <fazerxlo@...pl>
Signed-off-by: Feng Tang <feng.tang@...el.com>
---
 arch/x86/kernel/acpi/boot.c |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 3a6afba..b2297e5 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -1470,6 +1470,14 @@ static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
 		     DMI_MATCH(DMI_PRODUCT_NAME, "HP Compaq 6715b"),
 		     },
 	 },
+	{
+	 .callback = dmi_ignore_irq0_timer_override,
+	 .ident = "FUJITSU SIEMENS",
+	 .matches = {
+		     DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
+		     DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
+		     },
+	 },
 	{}
 };
 
-- 
1.7.9
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