Commit 9ede6b09 authored by Andi Kleen's avatar Andi Kleen Committed by Linus Torvalds

[PATCH] x86_64: Don't need to read PIT in timer handler when PM timer is used

The PM timer path through main_timer_handler doesn't need
the delay variable because it figures it out in a different way.
Don't try to read it from the PIT. With stopped PIT timer
it is even useless.
Signed-off-by: default avatarAndi Kleen <ak@suse.de>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent 51f62e18
......@@ -354,7 +354,7 @@ void main_timer_handler(struct pt_regs *regs)
{
static unsigned long rtc_update = 0;
unsigned long tsc;
int delay, offset = 0, lost = 0;
int delay = 0, offset = 0, lost = 0;
/*
* Here we are in the timer irq handler. We have irqs locally disabled (so we
......@@ -375,7 +375,7 @@ void main_timer_handler(struct pt_regs *regs)
*/
offset = hpet_readl(HPET_T0_CMP) - hpet_tick;
delay = hpet_readl(HPET_COUNTER) - offset;
} else {
} else if (!pmtmr_ioport) {
spin_lock(&i8253_lock);
outb_p(0x00, 0x43);
delay = inb_p(0x40);
......
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