1 files changed, 2 insertions, 4 deletions

diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index 05ea4be01a83..ca86c1ce7c8a 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -441,7 +441,7 @@ static void handle_dock(struct dock_station *ds, int dock)
         acpi_status status;
         struct acpi_object_list arg_list;
         union acpi_object arg;
-        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+        unsigned long long value;
 
         acpi_handle_info(ds->handle, "%s\n", dock ? "docking" : "undocking");
 
@@ -450,12 +450,10 @@ static void handle_dock(struct dock_station *ds, int dock)
         arg_list.pointer = &arg;
         arg.type = ACPI_TYPE_INTEGER;
         arg.integer.value = dock;
-        status = acpi_evaluate_object(ds->handle, "_DCK", &arg_list, &buffer);
+        status = acpi_evaluate_integer(ds->handle, "_DCK", &arg_list, &value);
         if (ACPI_FAILURE(status) && status != AE_NOT_FOUND)
                 acpi_handle_err(ds->handle, "Failed to execute _DCK (0x%x)\n",
                                 status);
-
-        kfree(buffer.pointer);
 }
 
 static inline void dock(struct dock_station *ds)