diff options
| -rw-r--r-- | drivers/base/power/suspend.c | 1 | ||||
| -rw-r--r-- | kernel/power/disk.c | 4 | ||||
| -rw-r--r-- | kernel/power/swsusp.c | 9 | ||||
| -rw-r--r-- | kernel/power/user.c | 2 |
4 files changed, 12 insertions, 4 deletions
diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c index 0bda4a7..e86db83 100644 --- a/drivers/base/power/suspend.c +++ b/drivers/base/power/suspend.c @@ -34,6 +34,7 @@ static inline char *suspend_verb(u32 event) switch (event) { case PM_EVENT_SUSPEND: return "suspend"; case PM_EVENT_FREEZE: return "freeze"; + case PM_EVENT_PRETHAW: return "prethaw"; default: return "(unknown suspend event)"; } } diff --git a/kernel/power/disk.c b/kernel/power/disk.c index e13e740..a3c34fb 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -98,7 +98,7 @@ static void unprepare_processes(void) } /** - * pm_suspend_disk - The granpappy of power management. + * pm_suspend_disk - The granpappy of hibernation power management. * * If we're going through the firmware, then get it over with quickly. * @@ -207,7 +207,7 @@ static int software_resume(void) pr_debug("PM: Preparing devices for restore.\n"); - if ((error = device_suspend(PMSG_FREEZE))) { + if ((error = device_suspend(PMSG_PRETHAW))) { printk("Some devices failed to suspend\n"); swsusp_free(); goto Thaw; diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c index 17f669c..6275289 100644 --- a/kernel/power/swsusp.c +++ b/kernel/power/swsusp.c @@ -248,6 +248,9 @@ int swsusp_suspend(void) restore_processor_state(); Restore_highmem: restore_highmem(); + /* NOTE: device_power_up() is just a resume() for devices + * that suspended with irqs off ... no overall powerup. + */ device_power_up(); Enable_irqs: local_irq_enable(); @@ -257,8 +260,12 @@ Enable_irqs: int swsusp_resume(void) { int error; + local_irq_disable(); - if (device_power_down(PMSG_FREEZE)) + /* NOTE: device_power_down() is just a suspend() with irqs off; + * it has no special "power things down" semantics + */ + if (device_power_down(PMSG_PRETHAW)) printk(KERN_ERR "Some devices failed to power down, very bad\n"); /* We'll ignore saved state, but this gets preempt count (etc) right */ save_processor_state(); diff --git a/kernel/power/user.c b/kernel/power/user.c index 3f1539f..5a8d060 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -191,7 +191,7 @@ static int snapshot_ioctl(struct inode *inode, struct file *filp, } down(&pm_sem); pm_prepare_console(); - error = device_suspend(PMSG_FREEZE); + error = device_suspend(PMSG_PRETHAW); if (!error) { error = swsusp_resume(); device_resume(); |
