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path: root/drivers/acpi/processor_idle.c
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Diffstat (limited to 'drivers/acpi/processor_idle.c')
-rw-r--r--drivers/acpi/processor_idle.c25
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index eb730a80952..80fa43471f4 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -878,12 +878,9 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
unsigned int working = 0;
#ifdef ARCH_APICTIMER_STOPS_ON_C3
- struct cpuinfo_x86 *c = cpu_data + pr->id;
+ int timer_broadcast = 0;
cpumask_t mask = cpumask_of_cpu(pr->id);
-
- if (c->x86_vendor == X86_VENDOR_INTEL) {
- on_each_cpu(switch_ipi_to_APIC_timer, &mask, 1, 1);
- }
+ on_each_cpu(switch_ipi_to_APIC_timer, &mask, 1, 1);
#endif
for (i = 1; i < ACPI_PROCESSOR_MAX_POWER; i++) {
@@ -896,15 +893,20 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
case ACPI_STATE_C2:
acpi_processor_power_verify_c2(cx);
+#ifdef ARCH_APICTIMER_STOPS_ON_C3
+ /* Some AMD systems fake C3 as C2, but still
+ have timer troubles */
+ if (cx->valid &&
+ boot_cpu_data.x86_vendor == X86_VENDOR_AMD)
+ timer_broadcast++;
+#endif
break;
case ACPI_STATE_C3:
acpi_processor_power_verify_c3(pr, cx);
#ifdef ARCH_APICTIMER_STOPS_ON_C3
- if (cx->valid && c->x86_vendor == X86_VENDOR_INTEL) {
- on_each_cpu(switch_APIC_timer_to_ipi,
- &mask, 1, 1);
- }
+ if (cx->valid)
+ timer_broadcast++;
#endif
break;
}
@@ -913,6 +915,11 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
working++;
}
+#ifdef ARCH_APICTIMER_STOPS_ON_C3
+ if (timer_broadcast)
+ on_each_cpu(switch_APIC_timer_to_ipi, &mask, 1, 1);
+#endif
+
return (working);
}