1 files changed, 7 insertions, 6 deletions

diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
index ae443fe2ebf6..35eebdac0f9d 100644
--- a/drivers/acpi/acpica/hwxfsleep.c
+++ b/drivers/acpi/acpica/hwxfsleep.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2012, Intel Corp.
+ * Copyright (C) 2000 - 2013, Intel Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -41,9 +41,9 @@
  * POSSIBILITY OF SUCH DAMAGES.
  */
 
+#include <linux/export.h>
 #include <acpi/acpi.h>
 #include "accommon.h"
-#include <linux/module.h>
 
 #define _COMPONENT          ACPI_HARDWARE
 ACPI_MODULE_NAME("hwxfsleep")
@@ -207,7 +207,7 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
                                     (u32)acpi_gbl_FADT.s4_bios_request, 8);
 
         do {
-                acpi_os_stall(1000);
+                acpi_os_stall(ACPI_USEC_PER_MSEC);
                 status =
                     acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
                 if (ACPI_FAILURE(status)) {
@@ -350,7 +350,7 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
+ * DESCRIPTION: Enter a system sleep state
  *              THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
  *
  ******************************************************************************/
@@ -382,8 +382,9 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state)
  * RETURN:      Status
  *
  * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
- *              sleep.
- *              Called with interrupts DISABLED.
+ *              sleep. Called with interrupts DISABLED.
+ *              We break wake/resume into 2 stages so that OSPM can handle
+ *              various OS-specific tasks between the two steps.
  *
  ******************************************************************************/
 acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)