linux-kernel - Re: [PATCH] x86/ACPI: Fix regression caused by 16ee7b3dcc56

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Date:	Tue, 07 Apr 2015 18:49:06 +0200
From:	Jim Bos <jim876@...all.nl>
To:	Jiang Liu <jiang.liu@...ux.intel.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>, Pavel Machek <pavel@....cz>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-pm@...r.kernel.org
Subject: Re: [PATCH] x86/ACPI: Fix regression caused by 16ee7b3dcc56

On 04/07/2015 04:34 PM, Jiang Liu wrote:
> Hi Jim,
> 	Could you please help to test this patch against v4.0-rc6?
> Thanks!
> Gerry
> 
> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
> ---
>  arch/x86/kernel/acpi/boot.c |   10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
> index 803b684676ff..f7f1fe7cd1b0 100644
> --- a/arch/x86/kernel/acpi/boot.c
> +++ b/arch/x86/kernel/acpi/boot.c
> @@ -403,10 +403,14 @@ static int mp_config_acpi_gsi(struct device *dev, u32 gsi, int trigger,
>  static int mp_register_gsi(struct device *dev, u32 gsi, int trigger,
>  			   int polarity)
>  {
> -	int irq, node;
> +	int i, irq, node;
>  
> -	if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC)
> -		return gsi;
> +	if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) {
> +		for (i = 0; i < nr_legacy_irqs(); i++)
> +			if (isa_irq_to_gsi[i] == gsi)
> +				return i;
> +		return -1;
> +	}
>  
>  	trigger = trigger == ACPI_EDGE_SENSITIVE ? 0 : 1;
>  	polarity = polarity == ACPI_ACTIVE_HIGH ? 0 : 1;
> 

Jiang,

It definitely seems to be an improvement, using Virtualbox guest with
your patch applied acpi-events work for all combinations (smp/nosmp
with/without I/O APIC assigned to the guest).

However, on the Dell laptop it still doesn't work.  To be sure I built a
3.16 kernel on this laptop and acpi_event power-button lid close/open
are working just fine.

Attached config + dmesg + cat /proc/interrupt for the working 3.16 case
and still not working 4.0-rc6+patch case.

Thanks,
Jim








Download attachment "3.16-OK.tgz" of type "application/x-compressed-tar" (32855 bytes)

Download attachment "4.0rc6-NOT_OK.tgz" of type "application/x-compressed-tar" (33681 bytes)