diff options
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 38 |
1 files changed, 5 insertions, 33 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index 7f19afe01b48..bd0723a7df3f 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -255,47 +255,19 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, break; case SNAPSHOT_S2RAM: - if (!pm_ops) { - error = -ENOSYS; - break; - } - if (!data->frozen) { error = -EPERM; break; } - if (!mutex_trylock(&pm_mutex)) { error = -EBUSY; break; } - - if (pm_ops->prepare) { - error = pm_ops->prepare(PM_SUSPEND_MEM); - if (error) - goto OutS3; - } - - /* Put devices to sleep */ - suspend_console(); - error = device_suspend(PMSG_SUSPEND); - if (error) { - printk(KERN_ERR "Failed to suspend some devices.\n"); - } else { - error = disable_nonboot_cpus(); - if (!error) { - /* Enter S3, system is already frozen */ - suspend_enter(PM_SUSPEND_MEM); - enable_nonboot_cpus(); - } - /* Wake up devices */ - device_resume(); - } - resume_console(); - if (pm_ops->finish) - pm_ops->finish(PM_SUSPEND_MEM); - - OutS3: + /* + * Tasks are frozen and the notifiers have been called with + * PM_HIBERNATION_PREPARE + */ + error = suspend_devices_and_enter(PM_SUSPEND_MEM); mutex_unlock(&pm_mutex); break; |