ACPI / Sleep: Rework enabling wakeup devices

There is no reason why acpi_enable_wakeup_device() should be called
with interrupts disabled, because it doesn't access hardware.  Thus
it is possible to move it next to acpi_enable_wakeup_device_prep()
and make the ACPI suspend, hibernate and poweroff code more
straightforward.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index da68ed24f4c5..8704ca78a8c4 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -70,10 +70,11 @@ static int acpi_sleep_prepare(u32 acpi_state)
 
         }
         ACPI_FLUSH_CPU_CACHE();
-        acpi_enable_wakeup_device_prep(acpi_state);
 #endif
         printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n",
                 acpi_state);
+        acpi_enable_wakeup_device_prep(acpi_state);
+        acpi_enable_wakeup_device(acpi_state);
         acpi_enter_sleep_state_prep(acpi_state);
         return 0;
 }
@@ -238,7 +239,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
         }
 
         local_irq_save(flags);
-        acpi_enable_wakeup_device(acpi_state);
         switch (acpi_state) {
         case ACPI_STATE_S1:
                 barrier();
@@ -442,7 +442,6 @@ static int acpi_hibernation_enter(void)
         ACPI_FLUSH_CPU_CACHE();
 
         local_irq_save(flags);
-        acpi_enable_wakeup_device(ACPI_STATE_S4);
         /* This shouldn't return.  If it returns, we have a problem */
         status = acpi_enter_sleep_state(ACPI_STATE_S4);
         /* Reprogram control registers and execute _BFS */
@@ -696,7 +695,6 @@ static void acpi_power_off(void)
         /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
         printk(KERN_DEBUG "%s called\n", __func__);
         local_irq_disable();
-        acpi_enable_wakeup_device(ACPI_STATE_S5);
         acpi_enter_sleep_state(ACPI_STATE_S5);
 }