diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c
index 90ae6d19364591eeaa64955dbcf5971222b52bdd..6a8b53789be46ca286b372c3ac5cf9e18ee398f1 100644
--- a/drivers/acpi/acpica/evxface.c
+++ b/drivers/acpi/acpica/evxface.c
@@ -251,7 +251,7 @@ acpi_remove_notify_handler(acpi_handle device,
 	}
 	/* Make sure all deferred tasks are completed */
 
-	acpi_os_wait_events_complete(NULL);
+	acpi_os_wait_events_complete();
 
 	status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
 	if (ACPI_FAILURE(status)) {
@@ -699,7 +699,7 @@ acpi_remove_gpe_handler(acpi_handle gpe_device,
 
 	/* Make sure all deferred tasks are completed */
 
-	acpi_os_wait_events_complete(NULL);
+	acpi_os_wait_events_complete();
 
 	status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS);
 	if (ACPI_FAILURE(status)) {
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index c3881b2eb8b2c5a0ac9b353aa7d7bdd699001ba0..9eaf708f588553ee78b10bb6571e55859fb1db3c 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -891,7 +891,7 @@ static void acpi_os_execute_deferred(struct work_struct *work)
 	struct acpi_os_dpc *dpc = container_of(work, struct acpi_os_dpc, work);
 
 	if (dpc->wait)
-		acpi_os_wait_events_complete(NULL);
+		acpi_os_wait_events_complete();
 
 	dpc->function(dpc->context);
 	kfree(dpc);
@@ -987,7 +987,7 @@ acpi_status acpi_os_hotplug_execute(acpi_osd_exec_callback function,
 	return __acpi_os_execute(0, function, context, 1);
 }
 
-void acpi_os_wait_events_complete(void *context)
+void acpi_os_wait_events_complete(void)
 {
 	flush_workqueue(kacpid_wq);
 	flush_workqueue(kacpi_notify_wq);
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index eb6fd233764bdeb7f28bc04626c23a1488db9af7..9a14f90d98ec039596e90b187b6f6ed9d365a386 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -144,7 +144,7 @@ void __init acpi_old_suspend_ordering(void)
 static int acpi_pm_freeze(void)
 {
 	acpi_disable_all_gpes();
-	acpi_os_wait_events_complete(NULL);
+	acpi_os_wait_events_complete();
 	acpi_ec_block_transactions();
 	return 0;
 }
diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h
index 21a5548c66865cb2b3a79d18807b79ce771f6d9f..f3746f7e0f40c6d158972b4b486cd8c5d9dc5c0d 100644
--- a/include/acpi/acpiosxf.h
+++ b/include/acpi/acpiosxf.h
@@ -205,7 +205,7 @@ acpi_os_execute(acpi_execute_type type,
 acpi_status
 acpi_os_hotplug_execute(acpi_osd_exec_callback function, void *context);
 
-void acpi_os_wait_events_complete(void *context);
+void acpi_os_wait_events_complete(void);
 
 void acpi_os_sleep(u64 milliseconds);