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Diffstat (limited to 'kernel')
-rw-r--r--kernel/power/power.h9
-rw-r--r--kernel/power/user.c39
2 files changed, 32 insertions, 16 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h
index 23c17031ed2..6ca85fd4975 100644
--- a/kernel/power/power.h
+++ b/kernel/power/power.h
@@ -156,15 +156,12 @@ struct resume_swap_area {
#define SNAPSHOT_FREE_SWAP_PAGES _IO(SNAPSHOT_IOC_MAGIC, 9)
#define SNAPSHOT_SET_SWAP_FILE _IOW(SNAPSHOT_IOC_MAGIC, 10, unsigned int)
#define SNAPSHOT_S2RAM _IO(SNAPSHOT_IOC_MAGIC, 11)
-#define SNAPSHOT_PMOPS _IOW(SNAPSHOT_IOC_MAGIC, 12, unsigned int)
#define SNAPSHOT_SET_SWAP_AREA _IOW(SNAPSHOT_IOC_MAGIC, 13, \
struct resume_swap_area)
#define SNAPSHOT_GET_IMAGE_SIZE _IOR(SNAPSHOT_IOC_MAGIC, 14, loff_t)
-#define SNAPSHOT_IOC_MAXNR 14
-
-#define PMOPS_PREPARE 1
-#define PMOPS_ENTER 2
-#define PMOPS_FINISH 3
+#define SNAPSHOT_PLATFORM_SUPPORT _IO(SNAPSHOT_IOC_MAGIC, 15)
+#define SNAPSHOT_POWER_OFF _IO(SNAPSHOT_IOC_MAGIC, 16)
+#define SNAPSHOT_IOC_MAXNR 16
/* If unset, the snapshot device cannot be open. */
extern atomic_t snapshot_device_available;
diff --git a/kernel/power/user.c b/kernel/power/user.c
index 88aac26e598..de3fb433ae3 100644
--- a/kernel/power/user.c
+++ b/kernel/power/user.c
@@ -28,6 +28,18 @@
#include "power.h"
+/*
+ * NOTE: The SNAPSHOT_PMOPS ioctl is obsolete and will be removed in the
+ * future. It is only preserved here for compatibility with existing userland
+ * utilities.
+ */
+#define SNAPSHOT_PMOPS _IOW(SNAPSHOT_IOC_MAGIC, 12, unsigned int)
+
+#define PMOPS_PREPARE 1
+#define PMOPS_ENTER 2
+#define PMOPS_FINISH 3
+
+
#define SNAPSHOT_MINOR 231
static struct snapshot_data {
@@ -36,7 +48,7 @@ static struct snapshot_data {
int mode;
char frozen;
char ready;
- char platform_suspend;
+ char platform_support;
} snapshot_state;
atomic_t snapshot_device_available = ATOMIC_INIT(1);
@@ -70,7 +82,7 @@ static int snapshot_open(struct inode *inode, struct file *filp)
}
data->frozen = 0;
data->ready = 0;
- data->platform_suspend = 0;
+ data->platform_support = 0;
return 0;
}
@@ -183,7 +195,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
error = -EPERM;
break;
}
- error = hibernation_snapshot(data->platform_suspend);
+ error = hibernation_snapshot(data->platform_support);
if (!error)
error = put_user(in_suspend, (unsigned int __user *)arg);
if (!error)
@@ -197,7 +209,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
error = -EPERM;
break;
}
- error = hibernation_restore(data->platform_suspend);
+ error = hibernation_restore(data->platform_support);
break;
case SNAPSHOT_FREE:
@@ -285,26 +297,33 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp,
mutex_unlock(&pm_mutex);
break;
- case SNAPSHOT_PMOPS:
+ case SNAPSHOT_PLATFORM_SUPPORT:
+ data->platform_support = !!arg;
+ break;
+
+ case SNAPSHOT_POWER_OFF:
+ if (data->platform_support)
+ error = hibernation_platform_enter();
+ break;
+
+ case SNAPSHOT_PMOPS: /* This ioctl is deprecated */
error = -EINVAL;
switch (arg) {
case PMOPS_PREPARE:
- data->platform_suspend = 1;
+ data->platform_support = 1;
error = 0;
break;
case PMOPS_ENTER:
- if (data->platform_suspend)
+ if (data->platform_support)
error = hibernation_platform_enter();
-
break;
case PMOPS_FINISH:
- if (data->platform_suspend)
+ if (data->platform_support)
error = 0;
-
break;
default: