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authorLen Brown <len.brown@intel.com>2008-01-11 12:27:13 -0500
committerLen Brown <len.brown@intel.com>2008-01-11 12:27:13 -0500
commit02d5bccf8ea3f9b8de21bfe19db77fbc50d92e04 (patch)
tree33402107adad8ebca51ea843291e09afc11a67d7
parenteba6860ac5f9578e3ba6d0f9900cfc72599c5d66 (diff)
parent9f9adecd2d0e4f88fa0e8cb06c6ec207748df70a (diff)
Pull bugzilla-9194 into release branch
-rw-r--r--arch/x86/kernel/apm_32.c10
-rw-r--r--drivers/acpi/bus.c7
-rw-r--r--include/linux/pm.h9
-rw-r--r--include/linux/pm_legacy.h6
-rw-r--r--kernel/power/main.c3
-rw-r--r--kernel/power/pm.c4
6 files changed, 17 insertions, 22 deletions
diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
index 17089a04102..af045ca0f65 100644
--- a/arch/x86/kernel/apm_32.c
+++ b/arch/x86/kernel/apm_32.c
@@ -2256,14 +2256,12 @@ static int __init apm_init(void)
apm_info.disabled = 1;
return -ENODEV;
}
- if (PM_IS_ACTIVE()) {
+ if (pm_flags & PM_ACPI) {
printk(KERN_NOTICE "apm: overridden by ACPI.\n");
apm_info.disabled = 1;
return -ENODEV;
}
-#ifdef CONFIG_PM_LEGACY
- pm_active = 1;
-#endif
+ pm_flags |= PM_APM;
/*
* Set up a segment that references the real mode segment 0x40
@@ -2366,9 +2364,7 @@ static void __exit apm_exit(void)
kthread_stop(kapmd_task);
kapmd_task = NULL;
}
-#ifdef CONFIG_PM_LEGACY
- pm_active = 0;
-#endif
+ pm_flags &= ~PM_APM;
}
module_init(apm_init);
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 49d432d0a12..d7a115c362d 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -29,7 +29,6 @@
#include <linux/list.h>
#include <linux/sched.h>
#include <linux/pm.h>
-#include <linux/pm_legacy.h>
#include <linux/device.h>
#include <linux/proc_fs.h>
#ifdef CONFIG_X86
@@ -764,16 +763,14 @@ static int __init acpi_init(void)
result = acpi_bus_init();
if (!result) {
-#ifdef CONFIG_PM_LEGACY
- if (!PM_IS_ACTIVE())
- pm_active = 1;
+ if (!(pm_flags & PM_APM))
+ pm_flags |= PM_ACPI;
else {
printk(KERN_INFO PREFIX
"APM is already active, exiting\n");
disable_acpi();
result = -ENODEV;
}
-#endif
} else
disable_acpi();
diff --git a/include/linux/pm.h b/include/linux/pm.h
index 09a309b7b5d..b78e0295adf 100644
--- a/include/linux/pm.h
+++ b/include/linux/pm.h
@@ -246,6 +246,15 @@ static inline int call_platform_enable_wakeup(struct device *dev, int is_on)
device_set_wakeup_enable(dev,val); \
} while(0)
+/*
+ * Global Power Management flags
+ * Used to keep APM and ACPI from both being active
+ */
+extern unsigned int pm_flags;
+
+#define PM_APM 1
+#define PM_ACPI 2
+
#endif /* __KERNEL__ */
#endif /* _LINUX_PM_H */
diff --git a/include/linux/pm_legacy.h b/include/linux/pm_legacy.h
index 514729a4468..446f4f42b95 100644
--- a/include/linux/pm_legacy.h
+++ b/include/linux/pm_legacy.h
@@ -4,10 +4,6 @@
#ifdef CONFIG_PM_LEGACY
-extern int pm_active;
-
-#define PM_IS_ACTIVE() (pm_active != 0)
-
/*
* Register a device with power management
*/
@@ -21,8 +17,6 @@ int __deprecated pm_send_all(pm_request_t rqst, void *data);
#else /* CONFIG_PM_LEGACY */
-#define PM_IS_ACTIVE() 0
-
static inline struct pm_dev *pm_register(pm_dev_t type,
unsigned long id,
pm_callback callback)
diff --git a/kernel/power/main.c b/kernel/power/main.c
index 3cdf95b1dc9..f71c9504a5c 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -28,6 +28,9 @@ BLOCKING_NOTIFIER_HEAD(pm_chain_head);
DEFINE_MUTEX(pm_mutex);
+unsigned int pm_flags;
+EXPORT_SYMBOL(pm_flags);
+
#ifdef CONFIG_SUSPEND
/* This is just an arbitrary number */
diff --git a/kernel/power/pm.c b/kernel/power/pm.c
index c50d15266c1..60c73fa670d 100644
--- a/kernel/power/pm.c
+++ b/kernel/power/pm.c
@@ -27,8 +27,6 @@
#include <linux/interrupt.h>
#include <linux/mutex.h>
-int pm_active;
-
/*
* Locking notes:
* pm_devs_lock can be a semaphore providing pm ops are not called
@@ -204,6 +202,4 @@ int pm_send_all(pm_request_t rqst, void *data)
EXPORT_SYMBOL(pm_register);
EXPORT_SYMBOL(pm_send_all);
-EXPORT_SYMBOL(pm_active);
-