[PATCH 2/6] ACPI / PM: Do not switch interrupts off/on in acpi_suspend_enter()

Rafael J. Wysocki
2011-02-07T22:23:58Z

From: Rafael J. Wysocki <rjw@sisk.pl>

The function acpi_suspend_enter() is always called with interrupts
off, so it doesn't need to switch them off and on.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
---
drivers/acpi/sleep.c | 3 ---
1 file changed, 3 deletions(-)

Index: linux-2.6/drivers/acpi/sleep.c
===================================================================
--- linux-2.6.orig/drivers/acpi/sleep.c
+++ linux-2.6/drivers/acpi/sleep.c
@@ -243,7 +243,6 @@ static int acpi_suspend_begin(suspend_st
static int acpi_suspend_enter(suspend_state_t pm_state)
{
acpi_status status = AE_OK;
- unsigned long flags = 0;
u32 acpi_state = acpi_target_sleep_state;

ACPI_FLUSH_CPU_CACHE();
@@ -256,7 +255,6 @@ static int acpi_suspend_enter(suspend_st
return error;
}

- local_irq_save(flags);
switch (acpi_state) {
case ACPI_STATE_S1:
barrier();
@@ -290,7 +288,6 @@ static int acpi_suspend_enter(suspend_st
/* Allow EC transactions to happen. */
acpi_ec_unblock_transactions_early();

- local_irq_restore(flags);
printk(KERN_DEBUG "Back to C!\n");

suspend_nvs_restore();