diff options
| -rw-r--r-- | drivers/acpi/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/acpi/bus.c | 7 | ||||
| -rw-r--r-- | include/linux/suspend.h | 6 | ||||
| -rw-r--r-- | kernel/power/main.c | 12 |
4 files changed, 21 insertions, 5 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 2aa042a5da6d..3a17ca5fff6f 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -7,7 +7,6 @@ menuconfig ACPI depends on !IA64_HP_SIM depends on IA64 || X86 depends on PCI - depends on PM select PNP default y help diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 7ced61f39492..973b0709972c 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -40,6 +40,7 @@ #include <acpi/acpi_bus.h> #include <acpi/acpi_drivers.h> #include <linux/dmi.h> +#include <linux/suspend.h> #include "internal.h" @@ -1025,13 +1026,13 @@ static int __init acpi_init(void) if (!result) { pci_mmcfg_late_init(); - if (!(pm_flags & PM_APM)) - pm_flags |= PM_ACPI; - else { + if (pm_apm_enabled()) { printk(KERN_INFO PREFIX "APM is already active, exiting\n"); disable_acpi(); result = -ENODEV; + } else { + pm_set_acpi_flag(); } } else disable_acpi(); diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 5a89e3612875..5e364db8a56a 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -272,6 +272,9 @@ extern int unregister_pm_notifier(struct notifier_block *nb); register_pm_notifier(&fn##_nb); \ } +extern bool pm_apm_enabled(void); +extern void pm_set_acpi_flag(void); + /* drivers/base/power/wakeup.c */ extern bool events_check_enabled; @@ -292,6 +295,9 @@ static inline int unregister_pm_notifier(struct notifier_block *nb) #define pm_notifier(fn, pri) do { (void)(fn); } while (0) +static inline bool pm_apm_enabled(void) { return false; } +static inline void pm_set_acpi_flag(void) {} + static inline bool pm_wakeup_pending(void) { return false; } #endif /* !CONFIG_PM_SLEEP */ diff --git a/kernel/power/main.c b/kernel/power/main.c index 701853042c28..b5405af48ddb 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -17,10 +17,20 @@ DEFINE_MUTEX(pm_mutex); +#ifdef CONFIG_PM_SLEEP + unsigned int pm_flags; EXPORT_SYMBOL(pm_flags); -#ifdef CONFIG_PM_SLEEP +bool pm_apm_enabled(void) +{ + return !!(pm_flags & PM_APM); +} + +void pm_set_acpi_flag(void) +{ + pm_flags |= PM_ACPI; +} /* Routines for PM-transition notifications */ |