diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/acpica/nsalloc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c index 1e5ff803d9a..222a23e838d 100644 --- a/drivers/acpi/acpica/nsalloc.c +++ b/drivers/acpi/acpica/nsalloc.c @@ -341,6 +341,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node) { struct acpi_namespace_node *child_node = NULL; u32 level = 1; + acpi_status status; ACPI_FUNCTION_TRACE(ns_delete_namespace_subtree); @@ -348,6 +349,13 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node) return_VOID; } + /* Lock namespace for possible update */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return_VOID; + } + /* * Traverse the tree of objects until we bubble back up * to where we started. @@ -397,6 +405,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node) } } + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_VOID; } |