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| author | imp <imp@FreeBSD.org> | 2013-02-21 06:38:24 +0000 |
|---|---|---|
| committer | imp <imp@FreeBSD.org> | 2013-02-21 06:38:24 +0000 |
| commit | e7a3528a802a6e703e526cd7fc6f3a75b8107fa1 (patch) | |
| tree | 50096494ea20d1781c60b7b7eb280e51c9c2dff2 /sys/x86 | |
| parent | 0f283d69d75a525f78159b74faa0ef76c181c8fd (diff) | |
| download | FreeBSD-src-e7a3528a802a6e703e526cd7fc6f3a75b8107fa1.zip FreeBSD-src-e7a3528a802a6e703e526cd7fc6f3a75b8107fa1.tar.gz | |
Correct comment about use of pmtimer, and the real reason it isn't
used or desirable for amd64.
Diffstat (limited to 'sys/x86')
| -rw-r--r-- | sys/x86/isa/clock.c | 7 |
1 files changed, 4 insertions, 3 deletions
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) |
