X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=kernel%2Fpower%2Fmain.c;h=6a6d5eb3524e7d2f219aeaa894e70981b3a706fb;hb=30e0e178193d4221abc9926b07a4c7661c7cc4a9;hp=84e1ae63bb8c5aea8e020bb53ac95184c87a638f;hpb=0e7d56e3d9d7e37c79d0e05ffb3994e34beb3bbc;p=linux-2.6

diff --git a/kernel/power/main.c b/kernel/power/main.c
index 84e1ae63bb..6a6d5eb352 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -24,13 +24,35 @@
 
 #include "power.h"
 
-BLOCKING_NOTIFIER_HEAD(pm_chain_head);
-
 DEFINE_MUTEX(pm_mutex);
 
 unsigned int pm_flags;
 EXPORT_SYMBOL(pm_flags);
 
+#ifdef CONFIG_PM_SLEEP
+
+/* Routines for PM-transition notifications */
+
+static BLOCKING_NOTIFIER_HEAD(pm_chain_head);
+
+int register_pm_notifier(struct notifier_block *nb)
+{
+	return blocking_notifier_chain_register(&pm_chain_head, nb);
+}
+EXPORT_SYMBOL_GPL(register_pm_notifier);
+
+int unregister_pm_notifier(struct notifier_block *nb)
+{
+	return blocking_notifier_chain_unregister(&pm_chain_head, nb);
+}
+EXPORT_SYMBOL_GPL(unregister_pm_notifier);
+
+int pm_notifier_call_chain(unsigned long val)
+{
+	return (blocking_notifier_call_chain(&pm_chain_head, val, NULL)
+			== NOTIFY_BAD) ? -EINVAL : 0;
+}
+
 #ifdef CONFIG_PM_DEBUG
 int pm_test_level = TEST_NONE;
 
@@ -53,7 +75,8 @@ static const char * const pm_tests[__TEST_AFTER_LAST] = {
 	[TEST_FREEZER] = "freezer",
 };
 
-static ssize_t pm_test_show(struct kset *kset, char *buf)
+static ssize_t pm_test_show(struct kobject *kobj, struct kobj_attribute *attr,
+				char *buf)
 {
 	char *s = buf;
 	int level;
@@ -73,7 +96,8 @@ static ssize_t pm_test_show(struct kset *kset, char *buf)
 	return (s - buf);
 }
 
-static ssize_t pm_test_store(struct kset *kset, const char *buf, size_t n)
+static ssize_t pm_test_store(struct kobject *kobj, struct kobj_attribute *attr,
+				const char *buf, size_t n)
 {
 	const char * const *s;
 	int level;
@@ -104,6 +128,8 @@ power_attr(pm_test);
 static inline int suspend_test(int level) { return 0; }
 #endif /* !CONFIG_PM_DEBUG */
 
+#endif /* CONFIG_PM_SLEEP */
+
 #ifdef CONFIG_SUSPEND
 
 /* This is just an arbitrary number */
@@ -149,13 +175,13 @@ static int suspend_prepare(void)
 	if (!suspend_ops || !suspend_ops->enter)
 		return -EPERM;
 
+	pm_prepare_console();
+
 	error = pm_notifier_call_chain(PM_SUSPEND_PREPARE);
 	if (error)
 		goto Finish;
 
-	pm_prepare_console();
-
-	if (freeze_processes()) {
+	if (suspend_freeze_processes()) {
 		error = -EAGAIN;
 		goto Thaw;
 	}
@@ -173,10 +199,10 @@ static int suspend_prepare(void)
 		return 0;
 
  Thaw:
-	thaw_processes();
-	pm_restore_console();
+	suspend_thaw_processes();
  Finish:
 	pm_notifier_call_chain(PM_POST_SUSPEND);
+	pm_restore_console();
 	return error;
 }
 
@@ -206,7 +232,7 @@ static int suspend_enter(suspend_state_t state)
 	BUG_ON(!irqs_disabled());
 
 	if ((error = device_power_down(PMSG_SUSPEND))) {
-		printk(KERN_ERR "Some devices failed to power down\n");
+		printk(KERN_ERR "PM: Some devices failed to power down\n");
 		goto Done;
 	}
 
@@ -221,8 +247,8 @@ static int suspend_enter(suspend_state_t state)
 }
 
 /**
- *	suspend_devices_and_enter - suspend devices and enter the desired system sleep
- *			  state.
+ *	suspend_devices_and_enter - suspend devices and enter the desired system
+ *				    sleep state.
  *	@state:		  state to enter
  */
 int suspend_devices_and_enter(suspend_state_t state)
@@ -232,15 +258,15 @@ int suspend_devices_and_enter(suspend_state_t state)
 	if (!suspend_ops)
 		return -ENOSYS;
 
-	if (suspend_ops->set_target) {
-		error = suspend_ops->set_target(state);
+	if (suspend_ops->begin) {
+		error = suspend_ops->begin(state);
 		if (error)
-			return error;
+			goto Close;
 	}
 	suspend_console();
 	error = device_suspend(PMSG_SUSPEND);
 	if (error) {
-		printk(KERN_ERR "Some devices failed to suspend\n");
+		printk(KERN_ERR "PM: Some devices failed to suspend\n");
 		goto Resume_console;
 	}
 
@@ -268,6 +294,9 @@ int suspend_devices_and_enter(suspend_state_t state)
 	device_resume();
  Resume_console:
 	resume_console();
+ Close:
+	if (suspend_ops->end)
+		suspend_ops->end();
 	return error;
 }
 
@@ -279,9 +308,9 @@ int suspend_devices_and_enter(suspend_state_t state)
  */
 static void suspend_finish(void)
 {
-	thaw_processes();
-	pm_restore_console();
+	suspend_thaw_processes();
 	pm_notifier_call_chain(PM_POST_SUSPEND);
+	pm_restore_console();
 }
 
 
@@ -323,7 +352,7 @@ static int enter_state(suspend_state_t state)
 	if (!mutex_trylock(&pm_mutex))
 		return -EBUSY;
 
-	printk("Syncing filesystems ... ");
+	printk(KERN_INFO "PM: Syncing filesystems ... ");
 	sys_sync();
 	printk("done.\n");
 
@@ -466,7 +495,7 @@ static struct attribute * g[] = {
 #ifdef CONFIG_PM_TRACE
 	&pm_trace_attr.attr,
 #endif
-#ifdef CONFIG_PM_DEBUG
+#if defined(CONFIG_PM_SLEEP) && defined(CONFIG_PM_DEBUG)
 	&pm_test_attr.attr,
 #endif
 	NULL,