summaryrefslogtreecommitdiff
path: root/kernel/power/hibernate.c
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/power/hibernate.c')
-rw-r--r--kernel/power/hibernate.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c
index 8b53db38a279..21ad3fe3164f 100644
--- a/kernel/power/hibernate.c
+++ b/kernel/power/hibernate.c
@@ -5,6 +5,7 @@
* Copyright (c) 2003 Open Source Development Lab
* Copyright (c) 2004 Pavel Machek <pavel@ucw.cz>
* Copyright (c) 2009 Rafael J. Wysocki, Novell Inc.
+ * Copyright (C) 2012 Bojan Smojver <bojan@rexursive.com>
*
* This file is released under the GPLv2.
*/
@@ -46,6 +47,9 @@ enum {
HIBERNATION_PLATFORM,
HIBERNATION_SHUTDOWN,
HIBERNATION_REBOOT,
+#ifdef CONFIG_SUSPEND
+ HIBERNATION_SUSPEND,
+#endif
/* keep last */
__HIBERNATION_AFTER_LAST
};
@@ -574,6 +578,10 @@ int hibernation_platform_enter(void)
*/
static void power_down(void)
{
+#ifdef CONFIG_SUSPEND
+ int error;
+#endif
+
switch (hibernation_mode) {
case HIBERNATION_REBOOT:
kernel_restart(NULL);
@@ -583,6 +591,25 @@ static void power_down(void)
case HIBERNATION_SHUTDOWN:
kernel_power_off();
break;
+#ifdef CONFIG_SUSPEND
+ case HIBERNATION_SUSPEND:
+ error = suspend_devices_and_enter(PM_SUSPEND_MEM);
+ if (error) {
+ if (hibernation_ops)
+ hibernation_mode = HIBERNATION_PLATFORM;
+ else
+ hibernation_mode = HIBERNATION_SHUTDOWN;
+ power_down();
+ }
+ /*
+ * Restore swap signature.
+ */
+ error = swsusp_unmark();
+ if (error)
+ printk(KERN_ERR "PM: Swap will be unusable! "
+ "Try swapon -a.\n");
+ return;
+#endif
}
kernel_halt();
/*
@@ -827,6 +854,9 @@ static const char * const hibernation_modes[] = {
[HIBERNATION_PLATFORM] = "platform",
[HIBERNATION_SHUTDOWN] = "shutdown",
[HIBERNATION_REBOOT] = "reboot",
+#ifdef CONFIG_SUSPEND
+ [HIBERNATION_SUSPEND] = "suspend",
+#endif
};
/*
@@ -867,6 +897,9 @@ static ssize_t disk_show(struct kobject *kobj, struct kobj_attribute *attr,
switch (i) {
case HIBERNATION_SHUTDOWN:
case HIBERNATION_REBOOT:
+#ifdef CONFIG_SUSPEND
+ case HIBERNATION_SUSPEND:
+#endif
break;
case HIBERNATION_PLATFORM:
if (hibernation_ops)
@@ -907,6 +940,9 @@ static ssize_t disk_store(struct kobject *kobj, struct kobj_attribute *attr,
switch (mode) {
case HIBERNATION_SHUTDOWN:
case HIBERNATION_REBOOT:
+#ifdef CONFIG_SUSPEND
+ case HIBERNATION_SUSPEND:
+#endif
hibernation_mode = mode;
break;
case HIBERNATION_PLATFORM: