1 files changed, 20 insertions, 6 deletions

diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
index 36a7d361d7cb..b15acebb96a1 100644
--- a/drivers/acpi/acpica/utosi.c
+++ b/drivers/acpi/acpica/utosi.c
@@ -108,9 +108,14 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
 
 acpi_status acpi_ut_initialize_interfaces(void)
 {
+        acpi_status status;
         u32 i;
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
+
         acpi_gbl_supported_interfaces = acpi_default_supported_interfaces;
 
         /* Link the static list of supported interfaces */
@@ -132,20 +137,24 @@ acpi_status acpi_ut_initialize_interfaces(void)
  *
  * PARAMETERS:  None
  *
- * RETURN:      None
+ * RETURN:      Status
  *
  * DESCRIPTION: Delete all interfaces in the global list. Sets
  *              acpi_gbl_supported_interfaces to NULL.
  *
  ******************************************************************************/
 
-void acpi_ut_interface_terminate(void)
+acpi_status acpi_ut_interface_terminate(void)
 {
+        acpi_status status;
         struct acpi_interface_info *next_interface;
 
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
-        next_interface = acpi_gbl_supported_interfaces;
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
+        next_interface = acpi_gbl_supported_interfaces;
         while (next_interface) {
                 acpi_gbl_supported_interfaces = next_interface->next;
 
@@ -160,6 +169,7 @@ void acpi_ut_interface_terminate(void)
         }
 
         acpi_os_release_mutex(acpi_gbl_osi_mutex);
+        return (AE_OK);
 }
 
 /*******************************************************************************
@@ -315,6 +325,7 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
         union acpi_operand_object *return_desc;
         struct acpi_interface_info *interface_info;
         acpi_interface_handler interface_handler;
+        acpi_status status;
         u32 return_value;
 
         ACPI_FUNCTION_TRACE(ut_osi_implementation);
@@ -336,7 +347,10 @@ acpi_status acpi_ut_osi_implementation(struct acpi_walk_state * walk_state)
         /* Default return value is 0, NOT SUPPORTED */
 
         return_value = 0;
-        (void)acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        status = acpi_os_acquire_mutex(acpi_gbl_osi_mutex, ACPI_WAIT_FOREVER);
+        if (ACPI_FAILURE(status)) {
+                return (status);
+        }
 
         /* Lookup the interface in the global _OSI list */