linux-kernel - Re: 2.6.19-rc5 nasty ACPI regression, AE

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Date:	Fri, 17 Nov 2006 13:04:00 -0800
From:	David Brownell <david-b@...bell.net>
To:	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>
Cc:	Len Brown <lenb@...nel.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org
Subject: Re: 2.6.19-rc5 nasty ACPI regression, AE_TIME errors

On Thursday 16 November 2006 10:22 pm, David Brownell wrote:
> On Thursday 16 November 2006 7:41 am, Alexey Starikovskiy wrote:
> > --- a/drivers/acpi/ec.c
> > +++ b/drivers/acpi/ec.c
> > @@ -467,8 +467,8 @@ static u32 acpi_ec_gpe_handler(void *dat
> >                 status = acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query, ec);
> >         }
> >         acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
> > -       return status == AE_OK ?
> > -           ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
> > +       WARN_ON(ACPI_FAILURE(status));
> > +       return ACPI_INTERRUPT_HANDLED;
> >  }
> >  
> 
> Strange ... applying this on top of the previous patch seems to work
> much better, but that WARN_ON hasn't triggered.  At least, not yet.
> Updating to RC6, with your two patches installed...

ACPI Exception (evregion-0424): AE_TIME, Returned by Handler for [EmbeddedControl] [20060707]
ACPI Exception (dswexec-0458): AE_TIME, While resolving operands for [OpcodeName unavailable] [2006070
7]
ACPI Error (psparse-0537): Method parse/execution failed [\_TZ_.THRM._TMP] (Node ffff810002032d10), AE
_TIME

OK, I don't get the WARN_ON when these happen, so it's got to be one of the
other EC updates.

It'd be nice if this were easily reproducible ...

- Dave

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