linux-kernel - Re: PROBLEM: ACPI Thermal Zone for CPU0 does not update after hibernation

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Message-ID: <33389.192.168.0.107.1176169658.squirrel@panacea.theblackmoor.net>
Date:	Mon, 9 Apr 2007 21:47:38 -0400 (EDT)
From:	"Walter Francis" <wally@...blackmoor.net>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, "Jung-Ik  Lee" <jilee@...gle.com>,
	linux-acpi@...r.kernel.org
Subject: Re: PROBLEM:  ACPI Thermal Zone for CPU0 does not update after   
     hibernation

> On Fri, 6 Apr 2007 16:13:55 -0400 (EDT)
> "Walter Francis" <wally@...blackmoor.net> wrote:

>> After hibernating, the CPU0 thermal zone never updates.  It will stay at 59C
>> forever for example.

> Yeah, John spotted a bug in there the other day.
>
> Does this fix it?
>
> --- a/drivers/acpi/thermal.c~acpi-thermal-fix-mod_timer-interval
> +++ a/drivers/acpi/thermal.c
> @@ -758,7 +758,8 @@ static void acpi_thermal_check(void *dat
>  			del_timer(&(tz->timer));
>  	} else {
>  		if (timer_pending(&(tz->timer)))
> -			mod_timer(&(tz->timer), (HZ * sleep_time) / 1000);
> +			mod_timer(&(tz->timer),
> +					jiffies + (HZ * sleep_time) / 1000);
>  		else {
>  			tz->timer.data = (unsigned long)tz;
>  			tz->timer.function = acpi_thermal_run;

No joy, didn't help.

Didn't apply clean to 21-pre6 (still latest I see on kernel.org), but here's
the section that seemed right.

        /*
         * Schedule Next Poll
         * ------------------
         */
        if (!sleep_time) {
                if (timer_pending(&(tz->timer)))
                        del_timer(&(tz->timer));
        } else {
                if (timer_pending(&(tz->timer)))
                        mod_timer(&(tz->timer),jiffies + (HZ * sleep_time) /
1000);
                else {
                        tz->timer.data = (unsigned long)tz;
                        tz->timer.function = acpi_thermal_run;
                        tz->timer.expires = jiffies + (HZ * sleep_time) / 1000;
                        add_timer(&(tz->timer));

Also, I think this is new with the line replaced..  Not sure exactly what's
causing it, but when I restart the cpuspeed daemon:

Starting cpuspeed: Error: Not an integer:
/proc/acpi/thermal_zone/TZS1/temperature

# cat /proc/acpi/thermal_zone/TZS1/temperature
temperature:             41 C

Looks normal to me?

Thanks!

-- 
Walter Francis

khayts.us
theblackmoor.net
unlimitedphoto.com

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