Fwd: [PATCH] x86, irq: Fix regression caused by commit b568b8601f05

[Stefan Bader]

On 18.02.2015 04:35, Leann Ogasawara wrote:
> On Mon, 2015-02-16 at 10:17 +0100, Stefan Bader wrote:
>> Andy, there has been no feedback on the fixup, yet. Just a heads-up that the bug
>> fix for Xen acpi irq seems to have some nasty side-effect for some laptops...
> 
> Hi Stefan,
> 
> I'm prepping another upload for Vivid.  I've purposely left the backport
> of b568b8601f05 sitting on Vivid master-next and not a part of the
> upload until the regression is sorted.  Do keep us posted.
> 

Now "alive" upstream (tagged stable):


commit 1ea76fbadd667b19c4fa4466f3a3b55a505e83d9
Author: Jiang Liu <jiang.liu at linux.intel.com>
Date:   Mon Feb 16 10:11:13 2015 +0800

    x86/irq: Fix regression caused by commit b568b8601f05

    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 at sci.fi>
    Tested-by: Ville Syrjälä <syrjala at sci.fi>
    Signed-off-by: Jiang Liu <jiang.liu at linux.intel.com>
    Signed-off-by: Peter Zijlstra (Intel) <peterz at infradead.org>
    Acked-by: Pavel Machek <pavel at ucw.cz>
    Cc: <stable at vger.kernel.org> # 3.19+
    Cc: H. Peter Anvin <hpa at zytor.com>
    Cc: Len Brown <len.brown at intel.com>
    Cc: Linus Torvalds <torvalds at linux-foundation.org>

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