From 76b461c21468f41837283b7888d55f1c0671f719 Mon Sep 17 00:00:00 2001 From: Venkatesh Pallipadi Date: Fri, 3 Feb 2006 21:50:47 +0100 Subject: [PATCH] [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 Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- drivers/acpi/processor_idle.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index be2dae52f6fa..3bfca093a870 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); } -- 2.20.1