diff options
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 39 |
1 files changed, 29 insertions, 10 deletions
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+++ b/kernel/power/user.c @@ -28,6 +28,18 @@ #include "power.h" +/* + * NOTE: The SNAPSHOT_PMOPS ioctl is obsolete and will be removed in the + * future.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: |