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Commit 729b4d4c authored by Alexey Starikovskiy's avatar Alexey Starikovskiy Committed by Len Brown
Browse files

[ACPI] fix reboot upon suspend-to-disk 

http://bugzilla.kernel.org/show_bug.cgi?id=4320



Signed-off-by: default avatarAlexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Acked-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent 7116317d

drivers/acpi/sleep/poweroff.c

+9 −6
Original line number Diff line number Diff line
@@ -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;

}
@@ -53,12 +51,17 @@ 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;

	}

}



static struct sysdev_class acpi_sysclass = {

	set_kset_name("acpi"),

drivers/acpi/sleep/sleep.h

+1 −1
Original line number Diff line number Diff line
@@ -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);

drivers/acpi/sleep/wakeup.c

+3 −3
Original line number Diff line number Diff line
@@ -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,

include/linux/kernel.h

+1 −0
Original line number Diff line number Diff line
@@ -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)

include/linux/reboot.h

+1 −2
Original line number Diff line number Diff line
@@ -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);