Re: [ACPI] If your ACPI-enabled machine does clean shutdownrandomly...

[Damien Sandras]

Le ven 28/11/2003 à 15:52, Pavel Machek a écrit :
> ...then you probably need this one. (One notebook I have here
> certainly needs it).
> 
> It seems that acpi likes to report completely bogus value from time to
> time...
> 

The problem with that patch is that it is filling the logs, but it is
certainly better than shutting the machine down without warning. I had
that problem and it took me a few minutes to figure out that it was
ACPI.

However, I didn't have that problem with kernel 2.6.0 test 9, it
appeared with 2.6.0 test 10 and test 11. I have mailed the list to see
if there was no patch I could reverse to determine where the problem
was, but I got no reaction, so I guess I will have to live with it ;)


> 								Pavel
> 
> --- clean/drivers/acpi/thermal.c	2003-07-27 22:31:09.000000000 +0200
> +++ linux/drivers/acpi/thermal.c	2003-11-25 22:27:11.000000000 +0100
> @@ -456,6 +459,10 @@
>  	if (!tz || !tz->trips.critical.flags.valid)
>  		return_VALUE(-EINVAL);
>  
> +	if (KELVIN_TO_CELSIUS(tz->temperature) >= 200) {
> +		printk(KERN_ALERT "Are you running CPU or nuclear power plant? ACPI claims CPU temp is %d C. Ignoring.\n", KELVIN_TO_CELSIUS(tz->temperature));
> +		return_VALUE(0);
> +	}
>  	if (tz->temperature >= tz->trips.critical.temperature) {
>  		ACPI_DEBUG_PRINT((ACPI_DB_WARN, "Critical trip point\n"));
>  		tz->trips.critical.flags.enabled = 1;
> @@ -467,6 +474,7 @@
>  	if (result)
>  		return_VALUE(result);
>  
> +	printk(KERN_EMERG "Critical temperature reached (%d C), shutting down.\n", tz->temperature);
>  	acpi_bus_generate_event(device, ACPI_THERMAL_NOTIFY_CRITICAL, tz->trips.critical.flags.enabled);
>  
>  	acpi_thermal_call_usermode(ACPI_THERMAL_PATH_POWEROFF);
-- 
Damien Sandras <dsandras@xxxxxxxxxxx>

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