From e7a3528a802a6e703e526cd7fc6f3a75b8107fa1 Mon Sep 17 00:00:00 2001 From: imp Date: Thu, 21 Feb 2013 06:38:24 +0000 Subject: Correct comment about use of pmtimer, and the real reason it isn't used or desirable for amd64. --- sys/x86/isa/clock.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) (limited to 'sys/x86') diff --git a/sys/x86/isa/clock.c b/sys/x86/isa/clock.c index 6c69759..232c913 100644 --- a/sys/x86/isa/clock.c +++ b/sys/x86/isa/clock.c @@ -478,9 +478,10 @@ i8254_restore(void) * * This function is called from pmtimer_resume() to restore all the timers. * This should not be necessary, but there are broken laptops that do not - * restore all the timers on resume. - * As long as pmtimer is not part of amd64 suport, skip this for the amd64 - * case. + * restore all the timers on resume. The APM spec was at best vague on the + * subject. + * pmtimer is used only with the old APM power management, and not with + * acpi, which is required for amd64, so skip it in that case. */ void timer_restore(void) -- cgit v1.1