diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c
index bbc2c1315c473ca7c7e8ff3770506ba645f16f0f..b2586f57e1f5fc1347757cbf24044acbac922a8d 100644
--- a/drivers/acpi/dock.c
+++ b/drivers/acpi/dock.c
@@ -935,6 +935,7 @@ static int dock_add(acpi_handle handle)
 	struct platform_device *dd;
 
 	id = dock_station_count;
+	memset(&ds, 0, sizeof(ds));
 	dd = platform_device_register_data(NULL, "dock", id, &ds, sizeof(ds));
 	if (IS_ERR(dd))
 		return PTR_ERR(dd);