On Mon, Feb 16, 2015 at 10:11:13AM +0800, Jiang Liu wrote:
> 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 <syrj...@sci.fi>
> Signed-off-by: Jiang Liu <jiang....@linux.intel.com>
> ---
> Hi Ville,
> Could you please help to try this patch instead of revert commit
> b568b8601f05?
Yep, this seems to fix it. Thanks.
Tested-by: Ville Syrjälä <syrj...@sci.fi>
Cc: <sta...@vger.kernel.org> # 3.19
That's one regression fixed on this machine, time to go bisect the next one...
> Thanks!
> Gerry
> ---
> arch/x86/kernel/acpi/boot.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
> index ae97ed0873c6..3d525c6124f6 100644
> --- a/arch/x86/kernel/acpi/boot.c
> +++ b/arch/x86/kernel/acpi/boot.c
> @@ -613,6 +613,11 @@ int acpi_gsi_to_irq(u32 gsi, unsigned int *irqp)
> {
> 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;
> --
> 1.7.10.4
>
--
Ville Syrjälä
syrj...@sci.fi
http://www.sci.fi/~syrjala/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
