7 files changed, 21 insertions, 34 deletions

diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index 635ba449ebc2..e22f4a973c0f 100644
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -341,9 +341,8 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
 
         /* A Non-NULL gpe_device means this is a GPE Block Device */
 
-        obj_desc =
-            acpi_ns_get_attached_object((struct acpi_namespace_node *)
-                                        gpe_device);
+        obj_desc = acpi_ns_get_attached_object((struct acpi_namespace_node *)
+                                               gpe_device);
         if (!obj_desc || !obj_desc->device.gpe_block) {
                 return (NULL);
         }
diff --git a/drivers/acpi/events/evgpeblk.c b/drivers/acpi/events/evgpeblk.c
index ad5bc76edf46..902c287b3a4f 100644
--- a/drivers/acpi/events/evgpeblk.c
+++ b/drivers/acpi/events/evgpeblk.c
@@ -1033,8 +1033,7 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device,
 
                         if (((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
                              ACPI_GPE_DISPATCH_METHOD)
-                            && (gpe_event_info->
-                                flags & ACPI_GPE_TYPE_RUNTIME)) {
+                            && (gpe_event_info->flags & ACPI_GPE_TYPE_RUNTIME)) {
                                 gpe_enabled_count++;
                         }
 
diff --git a/drivers/acpi/events/evmisc.c b/drivers/acpi/events/evmisc.c
index cae786ca8600..21cb749d0c75 100644
--- a/drivers/acpi/events/evmisc.c
+++ b/drivers/acpi/events/evmisc.c
@@ -196,15 +196,12 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node,
                 notify_info->notify.value = (u16) notify_value;
                 notify_info->notify.handler_obj = handler_obj;
 
-                acpi_ex_exit_interpreter();
-
-                acpi_ev_notify_dispatch(notify_info);
-
-                status = acpi_ex_enter_interpreter();
+                status =
+                    acpi_os_execute(OSL_NOTIFY_HANDLER, acpi_ev_notify_dispatch,
+                                    notify_info);
                 if (ACPI_FAILURE(status)) {
-                        return_ACPI_STATUS(status);
+                        acpi_ut_delete_generic_state(notify_info);
                 }
-
         }
 
         if (!handler_obj) {
@@ -323,8 +320,9 @@ static u32 acpi_ev_global_lock_handler(void *context)
                 acpi_gbl_global_lock_acquired = TRUE;
                 /* Send a unit to the semaphore */
 
-                if (ACPI_FAILURE(acpi_os_signal_semaphore(
-                        acpi_gbl_global_lock_semaphore, 1))) {
+                if (ACPI_FAILURE
+                    (acpi_os_signal_semaphore
+                     (acpi_gbl_global_lock_semaphore, 1))) {
                         ACPI_ERROR((AE_INFO,
                                     "Could not signal Global Lock semaphore"));
                 }
@@ -450,7 +448,9 @@ acpi_status acpi_ev_acquire_global_lock(u16 timeout)
         }
 
         if (ACPI_FAILURE(status)) {
-                status = acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex, timeout);
+                status =
+                    acpi_ex_system_wait_mutex(acpi_gbl_global_lock_mutex,
+                                              timeout);
         }
         if (ACPI_FAILURE(status)) {
                 return_ACPI_STATUS(status);
diff --git a/drivers/acpi/events/evregion.c b/drivers/acpi/events/evregion.c
index 96b0e8431748..e99f0c435a47 100644
--- a/drivers/acpi/events/evregion.c
+++ b/drivers/acpi/events/evregion.c
@@ -291,7 +291,6 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                                u32 bit_width, acpi_integer * value)
 {
         acpi_status status;
-        acpi_status status2;
         acpi_adr_space_handler handler;
         acpi_adr_space_setup region_setup;
         union acpi_operand_object *handler_desc;
@@ -345,7 +344,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                  * setup will potentially execute control methods
                  * (e.g., _REG method for this region)
                  */
-                acpi_ex_exit_interpreter();
+                acpi_ex_relinquish_interpreter();
 
                 status = region_setup(region_obj, ACPI_REGION_ACTIVATE,
                                       handler_desc->address_space.context,
@@ -353,10 +352,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
 
                 /* Re-enter the interpreter */
 
-                status2 = acpi_ex_enter_interpreter();
-                if (ACPI_FAILURE(status2)) {
-                        return_ACPI_STATUS(status2);
-                }
+                acpi_ex_reacquire_interpreter();
 
                 /* Check for failure of the Region Setup */
 
@@ -409,7 +405,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                  * exit the interpreter because the handler *might* block -- we don't
                  * know what it will do, so we can't hold the lock on the intepreter.
                  */
-                acpi_ex_exit_interpreter();
+                acpi_ex_relinquish_interpreter();
         }
 
         /* Call the handler */
@@ -430,10 +426,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj,
                  * We just returned from a non-default handler, we must re-enter the
                  * interpreter
                  */
-                status2 = acpi_ex_enter_interpreter();
-                if (ACPI_FAILURE(status2)) {
-                        return_ACPI_STATUS(status2);
-                }
+                acpi_ex_reacquire_interpreter();
         }
 
         return_ACPI_STATUS(status);
diff --git a/drivers/acpi/events/evrgnini.c b/drivers/acpi/events/evrgnini.c
index a4fa7e6822a3..400d90fca966 100644
--- a/drivers/acpi/events/evrgnini.c
+++ b/drivers/acpi/events/evrgnini.c
@@ -228,7 +228,8 @@ acpi_ev_pci_config_region_setup(acpi_handle handle,
 
                                 /* Install a handler for this PCI root bridge */
 
-                                status = acpi_install_address_space_handler((acpi_handle) pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
+                                status =
+                                    acpi_install_address_space_handler((acpi_handle) pci_root_node, ACPI_ADR_SPACE_PCI_CONFIG, ACPI_DEFAULT_HANDLER, NULL, NULL);
                                 if (ACPI_FAILURE(status)) {
                                         if (status == AE_SAME_HANDLER) {
                                                 /*
diff --git a/drivers/acpi/events/evxface.c b/drivers/acpi/events/evxface.c
index a3379bafa676..6d866a01f5f4 100644
--- a/drivers/acpi/events/evxface.c
+++ b/drivers/acpi/events/evxface.c
@@ -91,7 +91,6 @@ acpi_status acpi_install_exception_handler(acpi_exception_handler handler)
 
 ACPI_EXPORT_SYMBOL(acpi_install_exception_handler)
 #endif                          /*  ACPI_FUTURE_USAGE  */
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_install_fixed_event_handler
@@ -768,11 +767,9 @@ acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle)
                 return (AE_BAD_PARAMETER);
         }
 
-        status = acpi_ex_enter_interpreter();
-        if (ACPI_FAILURE(status)) {
-                return (status);
-        }
+        /* Must lock interpreter to prevent race conditions */
 
+        acpi_ex_enter_interpreter();
         status = acpi_ev_acquire_global_lock(timeout);
         acpi_ex_exit_interpreter();
 
diff --git a/drivers/acpi/events/evxfevnt.c b/drivers/acpi/events/evxfevnt.c
index 17065e98807c..9cbd3414a574 100644
--- a/drivers/acpi/events/evxfevnt.c
+++ b/drivers/acpi/events/evxfevnt.c
@@ -472,7 +472,6 @@ acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number, u32 flags)
 }
 
 ACPI_EXPORT_SYMBOL(acpi_clear_gpe)
-
 #ifdef ACPI_FUTURE_USAGE
 /*******************************************************************************
  *
@@ -568,7 +567,6 @@ acpi_get_gpe_status(acpi_handle gpe_device,
 
 ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)
 #endif                          /*  ACPI_FUTURE_USAGE  */
-
 /*******************************************************************************
  *
  * FUNCTION:    acpi_install_gpe_block