diff options
| -rw-r--r-- | drivers/acpi/sleep/poweroff.c | 15 | ||||
| -rw-r--r-- | drivers/acpi/sleep/sleep.h | 2 | ||||
| -rw-r--r-- | drivers/acpi/sleep/wakeup.c | 6 | ||||
| -rw-r--r-- | include/linux/kernel.h | 1 | ||||
| -rw-r--r-- | include/linux/reboot.h | 3 | ||||
| -rw-r--r-- | kernel/power/disk.c | 9 | ||||
| -rw-r--r-- | kernel/sys.c | 25 |
7 files changed, 26 insertions, 35 deletions
diff --git a/drivers/acpi/sleep/poweroff.c b/drivers/acpi/sleep/poweroff.c index af7935a95bc..47fb4b394ee 100644 --- a/drivers/acpi/sleep/poweroff.c +++ b/drivers/acpi/sleep/poweroff.c @@ -33,9 +33,7 @@ int acpi_sleep_prepare(u32 acpi_state) ACPI_FLUSH_CPU_CACHE(); acpi_enable_wakeup_device_prep(acpi_state); #endif - if (acpi_state == ACPI_STATE_S5) { - acpi_wakeup_gpe_poweroff_prepare(); - } + acpi_gpe_sleep_prepare(acpi_state); acpi_enter_sleep_state_prep(acpi_state); return 0; } @@ -53,11 +51,16 @@ void acpi_power_off(void) static int acpi_shutdown(struct sys_device *x) { - if (system_state == SYSTEM_POWER_OFF) { - /* Prepare if we are going to power off the system */ + switch (system_state) { + case SYSTEM_POWER_OFF: + /* Prepare to power off the system */ return acpi_sleep_prepare(ACPI_STATE_S5); + case SYSTEM_SUSPEND_DISK: + /* Prepare to suspend the system to disk */ + return acpi_sleep_prepare(ACPI_STATE_S4); + default: + return 0; } - return 0; } static struct sysdev_class acpi_sysclass = { diff --git a/drivers/acpi/sleep/sleep.h b/drivers/acpi/sleep/sleep.h index efd0001c6f0..f3e70397a7d 100644 --- a/drivers/acpi/sleep/sleep.h +++ b/drivers/acpi/sleep/sleep.h @@ -5,4 +5,4 @@ extern int acpi_suspend (u32 state); extern void acpi_enable_wakeup_device_prep(u8 sleep_state); extern void acpi_enable_wakeup_device(u8 sleep_state); extern void acpi_disable_wakeup_device(u8 sleep_state); -extern void acpi_wakeup_gpe_poweroff_prepare(void); +extern void acpi_gpe_sleep_prepare(u32 sleep_state); diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c index 4134ed43d02..85df0ceda2a 100644 --- a/drivers/acpi/sleep/wakeup.c +++ b/drivers/acpi/sleep/wakeup.c @@ -192,7 +192,7 @@ late_initcall(acpi_wakeup_device_init); * RUNTIME GPEs, we simply mark all GPES that * are not enabled for wakeup from S5 as RUNTIME. */ -void acpi_wakeup_gpe_poweroff_prepare(void) +void acpi_gpe_sleep_prepare(u32 sleep_state) { struct list_head *node, *next; @@ -201,8 +201,8 @@ void acpi_wakeup_gpe_poweroff_prepare(void) struct acpi_device, wakeup_list); - /* The GPE can wakeup system from S5, don't touch it */ - if ((u32) dev->wakeup.sleep_state == ACPI_STATE_S5) + /* The GPE can wakeup system from this state, don't touch it */ + if ((u32) dev->wakeup.sleep_state >= sleep_state) continue; /* acpi_set_gpe_type will automatically disable GPE */ acpi_set_gpe_type(dev->wakeup.gpe_device, diff --git a/include/linux/kernel.h b/include/linux/kernel.h index b1e407a4fbd..73aa55a7333 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -181,6 +181,7 @@ extern enum system_states { SYSTEM_HALT, SYSTEM_POWER_OFF, SYSTEM_RESTART, + SYSTEM_SUSPEND_DISK, } system_state; #define TAINT_PROPRIETARY_MODULE (1<<0) diff --git a/include/linux/reboot.h b/include/linux/reboot.h index 7ab2cdb83ef..015297ff73f 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -60,8 +60,7 @@ extern void machine_crash_shutdown(struct pt_regs *); */ extern void kernel_restart_prepare(char *cmd); -extern void kernel_halt_prepare(void); -extern void kernel_power_off_prepare(void); +extern void kernel_shutdown_prepare(enum system_states state); extern void kernel_restart(char *cmd); extern void kernel_halt(void); diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 027322a564f..f2cd279d07c 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -52,7 +52,7 @@ static void power_down(suspend_disk_method_t mode) switch(mode) { case PM_DISK_PLATFORM: - kernel_power_off_prepare(); + kernel_shutdown_prepare(SYSTEM_SUSPEND_DISK); error = pm_ops->enter(PM_SUSPEND_DISK); break; case PM_DISK_SHUTDOWN: @@ -119,13 +119,6 @@ static int prepare_processes(void) goto thaw; } - if (pm_disk_mode == PM_DISK_PLATFORM) { - if (pm_ops && pm_ops->prepare) { - if ((error = pm_ops->prepare(PM_SUSPEND_DISK))) - goto thaw; - } - } - /* Free memory before shutting down devices. */ free_some_memory(); return 0; diff --git a/kernel/sys.c b/kernel/sys.c index eecf84526af..c3b1874661f 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -427,23 +427,25 @@ void kernel_kexec(void) } EXPORT_SYMBOL_GPL(kernel_kexec); +void kernel_shutdown_prepare(enum system_states state) +{ + notifier_call_chain(&reboot_notifier_list, + (state == SYSTEM_HALT)?SYS_HALT:SYS_POWER_OFF, NULL); + system_state = state; + device_shutdown(); +} /** * kernel_halt - halt the system * * Shutdown everything and perform a clean system halt. */ -void kernel_halt_prepare(void) -{ - notifier_call_chain(&reboot_notifier_list, SYS_HALT, NULL); - system_state = SYSTEM_HALT; - device_shutdown(); -} void kernel_halt(void) { - kernel_halt_prepare(); + kernel_shutdown_prepare(SYSTEM_HALT); printk(KERN_EMERG "System halted.\n"); machine_halt(); } + EXPORT_SYMBOL_GPL(kernel_halt); /** @@ -451,20 +453,13 @@ EXPORT_SYMBOL_GPL(kernel_halt); * * Shutdown everything and perform a clean system power_off. */ -void kernel_power_off_prepare(void) -{ - notifier_call_chain(&reboot_notifier_list, SYS_POWER_OFF, NULL); - system_state = SYSTEM_POWER_OFF; - device_shutdown(); -} void kernel_power_off(void) { - kernel_power_off_prepare(); + kernel_shutdown_prepare(SYSTEM_POWER_OFF); printk(KERN_EMERG "Power down.\n"); machine_power_off(); } EXPORT_SYMBOL_GPL(kernel_power_off); - /* * Reboot system call: for obvious reasons only root may call it, * and even root needs to set up some magic numbers in the registers |