On Wed, Sep 27, 2006 at 12:00:40AM -0400, Len Brown wrote:
> My T30 doesn't boot if CONFIG_PM_LEGACY=n
> unless "apm=off".
>
> Seems that this build option causes PM_IS_ACTIVE() to be constant 0,
> which disables APM's check to see if ACPI is running:
>
> apm_init()
> ...
> if (PM_IS_ACTIVE()) {
> printk(KERN_NOTICE "apm: overridden by ACPI.\n");
> apm_info.disabled = 1;
> return -ENODEV;
> }
>
> Apparently when CONFIG_PM_LEGACY was created, CONFIG_APM depended
> on it, so apm.c wasn't built. But that dependency was later removed so it
> is now possible
> to build APM with its check for ACPI mysteriously disabled -- much to the
> unhappyness
> of my T30.
>
> What's the plan here?
Good question. There's no real replacement for pm_active in the non-legacy
config afaik. Perhaps the cleanest alternative is to undeprecate that macro?
The only other option I can think of is doing something like this in apm.c ...
+#ifdef CONFIG_ACPI
- if (PM_IS_ACTIVE()) {
printk(KERN_NOTICE "apm: overridden by ACPI.\n");
apm_info.disabled = 1;
return -ENODEV;
- }
+#endif
Dave
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