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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, 30 insertions, 20 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 788da9781f8..2dd2c1f3a01 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -418,13 +418,12 @@ static void acpi_processor_idle(void)
cx = pr->power.state;
if (!cx || acpi_idle_suspend) {
- if (pm_idle_save)
- pm_idle_save();
- else
+ if (pm_idle_save) {
+ pm_idle_save(); /* enables IRQs */
+ } else {
acpi_safe_halt();
-
- if (irqs_disabled())
local_irq_enable();
+ }
return;
}
@@ -520,10 +519,12 @@ static void acpi_processor_idle(void)
* Use the appropriate idle routine, the one that would
* be used without acpi C-states.
*/
- if (pm_idle_save)
- pm_idle_save();
- else
+ if (pm_idle_save) {
+ pm_idle_save(); /* enables IRQs */
+ } else {
acpi_safe_halt();
+ local_irq_enable();
+ }
/*
* TBD: Can't get time duration while in C1, as resumes
@@ -534,8 +535,6 @@ static void acpi_processor_idle(void)
* skew otherwise.
*/
sleep_ticks = 0xFFFFFFFF;
- if (irqs_disabled())
- local_irq_enable();
break;
@@ -848,6 +847,7 @@ static int acpi_processor_get_power_info_default(struct acpi_processor *pr)
/* all processors need to support C1 */
pr->power.states[ACPI_STATE_C1].type = ACPI_STATE_C1;
pr->power.states[ACPI_STATE_C1].valid = 1;
+ pr->power.states[ACPI_STATE_C1].entry_method = ACPI_CSTATE_HALT;
}
/* the C0 state only exists as a filler in our array */
pr->power.states[ACPI_STATE_C0].valid = 1;
@@ -960,6 +960,9 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr)
cx.address);
}
+ if (cx.type == ACPI_STATE_C1) {
+ cx.valid = 1;
+ }
obj = &(element->package.elements[2]);
if (obj->type != ACPI_TYPE_INTEGER)
@@ -1283,6 +1286,7 @@ static int acpi_processor_power_open_fs(struct inode *inode, struct file *file)
}
static const struct file_operations acpi_processor_power_fops = {
+ .owner = THIS_MODULE,
.open = acpi_processor_power_open_fs,
.read = seq_read,
.llseek = seq_lseek,
@@ -1295,6 +1299,8 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
int result = 0;
+ if (boot_option_idle_override)
+ return 0;
if (!pr)
return -EINVAL;
@@ -1734,6 +1740,9 @@ int acpi_processor_cst_has_changed(struct acpi_processor *pr)
{
int ret;
+ if (boot_option_idle_override)
+ return 0;
+
if (!pr)
return -EINVAL;
@@ -1764,6 +1773,8 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
struct proc_dir_entry *entry = NULL;
unsigned int i;
+ if (boot_option_idle_override)
+ return 0;
if (!first_run) {
dmi_check_system(processor_power_dmi_table);
@@ -1799,7 +1810,7 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
* Note that we use previously set idle handler will be used on
* platforms that only support C1.
*/
- if ((pr->flags.power) && (!boot_option_idle_override)) {
+ if (pr->flags.power) {
#ifdef CONFIG_CPU_IDLE
acpi_processor_setup_cpuidle(pr);
pr->power.dev.cpu = pr->id;
@@ -1823,24 +1834,23 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr,
}
/* 'power' [R] */
- entry = create_proc_entry(ACPI_PROCESSOR_FILE_POWER,
- S_IRUGO, acpi_device_dir(device));
+ entry = proc_create_data(ACPI_PROCESSOR_FILE_POWER,
+ S_IRUGO, acpi_device_dir(device),
+ &acpi_processor_power_fops,
+ acpi_driver_data(device));
if (!entry)
return -EIO;
- else {
- entry->proc_fops = &acpi_processor_power_fops;
- entry->data = acpi_driver_data(device);
- entry->owner = THIS_MODULE;
- }
-
return 0;
}
int acpi_processor_power_exit(struct acpi_processor *pr,
struct acpi_device *device)
{
+ if (boot_option_idle_override)
+ return 0;
+
#ifdef CONFIG_CPU_IDLE
- if ((pr->flags.power) && (!boot_option_idle_override))
+ if (pr->flags.power)
cpuidle_unregister_device(&pr->power.dev);
#endif
pr->flags.power_setup_done = 0;