[PATCH 6/6] ACPI / PM: Do not switch interrupts off/on in acpi_hibernation_enter()
From: Rafael J. Wysocki <hidden>
Date: 2011-02-07 22:22:46
From: Rafael J. Wysocki <redacted> The function acpi_hibernation_enter() is always called with interrupts off, so it doesn't need to switch them off and on. Signed-off-by: Rafael J. Wysocki <redacted> --- 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@@ -457,16 +457,13 @@ static int acpi_hibernation_begin(void) static int acpi_hibernation_enter(void) { acpi_status status = AE_OK; - unsigned long flags = 0; ACPI_FLUSH_CPU_CACHE(); - local_irq_save(flags); /* 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 */ acpi_leave_sleep_state_prep(ACPI_STATE_S4); - local_irq_restore(flags); return ACPI_SUCCESS(status) ? 0 : -EFAULT; }