This is a note to let you know that I've just added the patch titled
x86/irq: Fix regression caused by commit b568b8601f05
to the 3.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
x86-irq-fix-regression-caused-by-commit-b568b8601f05.patch
and it can be found in the queue-3.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1ea76fbadd667b19c4fa4466f3a3b55a505e83d9 Mon Sep 17 00:00:00 2001
From: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Date: Mon, 16 Feb 2015 10:11:13 +0800
Subject: x86/irq: Fix regression caused by commit b568b8601f05
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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From: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
commit 1ea76fbadd667b19c4fa4466f3a3b55a505e83d9 upstream.
Commit b568b8601f05 ("Treat SCI interrupt as normal GSI interrupt")
accidently removes support of legacy PIC interrupt when fixing a
regression for Xen, which causes a nasty regression on HP/Compaq
nc6000 where we fail to register the ACPI interrupt, and thus
lose eg. thermal notifications leading a potentially overheated
machine.
So reintroduce support of legacy PIC based ACPI SCI interrupt.
Reported-by: Ville Syrjälä <syrjala@xxxxxx>
Tested-by: Ville Syrjälä <syrjala@xxxxxx>
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
Cc: Sander Eikelenboom <linux@xxxxxxxxxxxxxx>
Cc: linux-pm@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/1424052673-22974-1-git-send-email-jiang.liu@xxxxxxxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/acpi/boot.c | 5 +++++
1 file changed, 5 insertions(+)
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -606,6 +606,11 @@ int acpi_gsi_to_irq(u32 gsi, unsigned in
{
int rc, irq, trigger, polarity;
+ if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) {
+ *irqp = gsi;
+ return 0;
+ }
+
rc = acpi_get_override_irq(gsi, &trigger, &polarity);
if (rc == 0) {
trigger = trigger ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
Patches currently in stable-queue which might be from jiang.liu@xxxxxxxxxxxxxxx are
queue-3.18/x86-irq-fix-regression-caused-by-commit-b568b8601f05.patch
queue-3.18/x86-xen-treat-sci-interrupt-as-normal-gsi-interrupt.patch
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