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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 16 Nov 2006 18:41:10 +0300
From:	Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>
To:	David Brownell <david-b@...bell.net>
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

Looks like either EC GPE or whole ACPI irq got disabled... Could you 
check that ACPI interrupts still arrive after
you notice AE_TIME?
Also, may be attached patch will help?

Regards,
    Alex.

David Brownell wrote:
> On Wednesday 15 November 2006 1:56 pm, David Brownell wrote:
>   
>> On Wednesday 15 November 2006 6:48 am, Alexey Starikovskiy wrote:
>>     
>>> ec1.patch
>>>
>>>
>>> Always enable GPE after return from notify handler.
>>>
>>> From:  Alexey Starikovskiy <alexey.y.starikovskiy@...ux.intel.com>
>>>
>>>
>>> ---
>>>       
>> Yes, this seems to resolve the regression as well as Len's ec_intr=0 boot param.
>>     
>
> Whoops, I spoke too soon.  It does get rid of SOME of the AE_TIME errors.  But
> the system is still confused about whether or not the AC is connected, and
> whether the battery is charging or not; and the CPU is still relatively hot.
> Even with this patch I later got:
>
> 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
>
> In short, better but evidently not yet good enough...
>
> - Dave
>
>
>
>   
>> IMO this should get merged into 2.6.19 ASAP ...
>>
>>
>>     
>>>  drivers/acpi/ec.c |    2 --
>>>  1 files changed, 0 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
>>> index e6d4b08..937eafc 100644
>>> --- a/drivers/acpi/ec.c
>>> +++ b/drivers/acpi/ec.c
>>> @@ -465,8 +465,6 @@ static u32 acpi_ec_gpe_handler(void *dat
>>>  
>>>         if (value & ACPI_EC_FLAG_SCI) {
>>>                 status = acpi_os_execute(OSL_EC_BURST_HANDLER, acpi_ec_gpe_query, ec);
>>> -               return status == AE_OK ?
>>> -                   ACPI_INTERRUPT_HANDLED : ACPI_INTERRUPT_NOT_HANDLED;
>>>         }
>>>         acpi_enable_gpe(NULL, ec->gpe_bit, ACPI_ISR);
>>>         return status == AE_OK ?
>>>       


View attachment "ec2.patch" of type "text/plain" (757 bytes)