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authorVenkatesh Pallipadi <venkatesh.pallipadi@intel.com>2006-02-03 21:50:47 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-04 16:43:13 -0800
commit76b461c21468f41837283b7888d55f1c0671f719 (patch)
tree3df6a35fe789dbc70db4ae6e32c8e694079e97d8 /drivers
parent226d780909f71bebfa4dfffa21493244aa22dfdc (diff)
[PATCH] x86_64: Only switch to IPI broadcast timer on Intel when C3 is supported
Bug in apic timer removal on C3 patch. We should switch to IPI from APIC timer only when C3 state is valid. Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/processor_idle.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index be2dae52f6f..3bfca093a87 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -899,7 +899,7 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
case ACPI_STATE_C3:
acpi_processor_power_verify_c3(pr, cx);
#ifdef ARCH_APICTIMER_STOPS_ON_C3
- if (c->x86_vendor == X86_VENDOR_INTEL) {
+ if (cx->valid && c->x86_vendor == X86_VENDOR_INTEL) {
on_each_cpu(switch_APIC_timer_to_ipi,
&mask, 1, 1);
}