linux-kernel - [PATCH 5/8] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding

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Date:	Sat, 30 Jun 2012 01:07:32 -0400
From:	Len Brown <lenb@...nel.org>
To:	linux-acpi@...r.kernel.org, linux-pm@...ts.linux-foundation.org
Cc:	linux-kernel@...r.kernel.org, Feng Tang <feng.tang@...el.com>,
	Len Brown <len.brown@...el.com>
Subject: [PATCH 5/8] ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding

From: Feng Tang <feng.tang@...el.com>

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>
Signed-off-by: Len Brown <len.brown@...el.com>
---
 arch/x86/kernel/acpi/boot.c | 8 ++++++++
 1 file changed, 8 insertions(+)

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"),
+		     },
+	 },
 	{}
 };
 
-- 
1.7.11.1.104.ge7b44f1

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