1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/exutils.c b/drivers/acpi/acpica/exutils.c
index 425f13372e68..a8b857a7e9fb 100644
--- a/drivers/acpi/acpica/exutils.c
+++ b/drivers/acpi/acpica/exutils.c
@@ -94,6 +94,10 @@ void acpi_ex_enter_interpreter(void)
                 ACPI_ERROR((AE_INFO,
                             "Could not acquire AML Interpreter mutex"));
         }
+        status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE);
+        if (ACPI_FAILURE(status)) {
+                ACPI_ERROR((AE_INFO, "Could not acquire AML Namespace mutex"));
+        }
 
         return_VOID;
 }
@@ -127,6 +131,10 @@ void acpi_ex_exit_interpreter(void)
 
         ACPI_FUNCTION_TRACE(ex_exit_interpreter);
 
+        status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE);
+        if (ACPI_FAILURE(status)) {
+                ACPI_ERROR((AE_INFO, "Could not release AML Namespace mutex"));
+        }
         status = acpi_ut_release_mutex(ACPI_MTX_INTERPRETER);
         if (ACPI_FAILURE(status)) {
                 ACPI_ERROR((AE_INFO,