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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.c50
1 files changed, 16 insertions, 34 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 644516d9bde6..3dca36d4ad26 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -35,6 +35,7 @@
#include <linux/clockchips.h>
#include <linux/cpuidle.h>
#include <linux/syscore_ops.h>
+#include <acpi/processor.h>
/*
* Include the apic definitions for x86 to have the APIC timer related defines
@@ -46,9 +47,6 @@
#include <asm/apic.h>
#endif
-#include <acpi/acpi_bus.h>
-#include <acpi/processor.h>
-
#define PREFIX "ACPI: "
#define ACPI_PROCESSOR_CLASS "processor"
@@ -213,7 +211,7 @@ static int acpi_processor_suspend(void)
static void acpi_processor_resume(void)
{
- u32 resumed_bm_rld;
+ u32 resumed_bm_rld = 0;
acpi_read_bit_register(ACPI_BITREG_BUS_MASTER_RLD, &resumed_bm_rld);
if (resumed_bm_rld == saved_bm_rld)
@@ -598,7 +596,7 @@ static int acpi_processor_power_verify(struct acpi_processor *pr)
case ACPI_STATE_C2:
if (!cx->address)
break;
- cx->valid = 1;
+ cx->valid = 1;
break;
case ACPI_STATE_C3:
@@ -727,11 +725,6 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev,
if (unlikely(!pr))
return -EINVAL;
- if (cx->entry_method == ACPI_CSTATE_FFH) {
- if (current_set_polling_and_test())
- return -EINVAL;
- }
-
lapic_timer_state_broadcast(pr, cx, 1);
acpi_idle_do_entry(cx);
@@ -785,10 +778,12 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev,
if (unlikely(!pr))
return -EINVAL;
- if (cx->entry_method == ACPI_CSTATE_FFH) {
- if (current_set_polling_and_test())
- return -EINVAL;
- }
+#ifdef CONFIG_HOTPLUG_CPU
+ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+ !pr->flags.has_cst &&
+ !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
+ return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
+#endif
/*
* Must be done before busmaster disable as we might need to
@@ -831,6 +826,13 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
if (unlikely(!pr))
return -EINVAL;
+#ifdef CONFIG_HOTPLUG_CPU
+ if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
+ !pr->flags.has_cst &&
+ !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
+ return acpi_idle_enter_c1(dev, drv, CPUIDLE_DRIVER_STATE_START);
+#endif
+
if (!cx->bm_sts_skip && acpi_idle_bm_check()) {
if (drv->safe_state_index >= 0) {
return drv->states[drv->safe_state_index].enter(dev,
@@ -841,11 +843,6 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev,
}
}
- if (cx->entry_method == ACPI_CSTATE_FFH) {
- if (current_set_polling_and_test())
- return -EINVAL;
- }
-
acpi_unlazy_tlb(smp_processor_id());
/* Tell the scheduler that we are going deep-idle: */
@@ -932,12 +929,6 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,
if (!cx->valid)
continue;
-#ifdef CONFIG_HOTPLUG_CPU
- if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
- !pr->flags.has_cst &&
- !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
- continue;
-#endif
per_cpu(acpi_cstate[count], dev->cpu) = cx;
count++;
@@ -945,8 +936,6 @@ static int acpi_processor_setup_cpuidle_cx(struct acpi_processor *pr,
break;
}
- dev->state_count = count;
-
if (!count)
return -EINVAL;
@@ -987,13 +976,6 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
if (!cx->valid)
continue;
-#ifdef CONFIG_HOTPLUG_CPU
- if ((cx->type != ACPI_STATE_C1) && (num_online_cpus() > 1) &&
- !pr->flags.has_cst &&
- !(acpi_gbl_FADT.flags & ACPI_FADT_C2_MP_SUPPORTED))
- continue;
-#endif
-
state = &drv->states[count];
snprintf(state->name, CPUIDLE_NAME_LEN, "C%d", i);
strncpy(state->desc, cx->desc, CPUIDLE_DESC_LEN);