Messages in this thread | | | Date | Wed, 8 Nov 2006 13:28:26 +0100 | From | Ingo Molnar <> | Subject | Re: + i386-lapic-timer-calibration.patch added to -mm tree |
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* Thomas Gleixner <tglx@linutronix.de> wrote:
> On Wed, 2006-11-08 at 13:09 +0100, Ingo Molnar wrote: > > one question: > > > > > + long tapic = apic_read(APIC_TMCCT); > > > + unsigned long pm = acpi_pm_read_early(); > > > > is this function call safe if the box has no pm-timer? > > That's in the pm-timer-allow-early-access.patch: > > Subject: pmtimer: Allow early access to pm timer > > +static inline u32 acpi_pm_read_early(void) > +{ > + if (!pmtmr_ioport) > + return 0; > + /* mask the output to 24 bits */ > + return acpi_pm_read_verified(); > +} > > If pmtmr is not available, the function returns 0, so the resulting > delta is 0 and therefor ignored. Same applies, when PMTIMER is > disabled in the config.
ok, looks good.
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