1 files changed, 9 insertions, 0 deletions
diff --git a/sys/contrib/dev/acpica/utilities/utmutex.c b/sys/contrib/dev/acpica/utilities/utmutex.c
index 2231ab6..14cab79 100644
--- a/sys/contrib/dev/acpica/utilities/utmutex.c
+++ b/sys/contrib/dev/acpica/utilities/utmutex.c
@@ -182,6 +182,13 @@ AcpiUtMutexInitialize (
         return_ACPI_STATUS (Status);
     }
 
+    /* Mutex for _OSI support */
+    Status = AcpiOsCreateMutex (&AcpiGbl_OsiMutex);
+    if (ACPI_FAILURE (Status))
+    {
+        return_ACPI_STATUS (Status);
+    }
+
     /* Create the reader/writer lock for namespace access */
 
     Status = AcpiUtCreateRwLock (&AcpiGbl_NamespaceRwLock);
@@ -219,6 +226,8 @@ AcpiUtMutexTerminate (
         AcpiUtDeleteMutex (i);
     }
 
+    AcpiOsDeleteMutex (AcpiGbl_OsiMutex);
+
     /* Delete the spinlocks */
 
     AcpiOsDeleteLock (AcpiGbl_GpeLock);