1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 3b26a7104363..9271e5209ac1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -851,7 +851,7 @@ static void acpi_device_set_id(struct acpi_device *device,
          * ----
          * Fix for the system root bus device -- the only root-level device.
          */
-        if ((parent == ACPI_ROOT_OBJECT) && (type == ACPI_BUS_TYPE_DEVICE)) {
+        if (((acpi_handle)parent == ACPI_ROOT_OBJECT) && (type == ACPI_BUS_TYPE_DEVICE)) {
                 hid = ACPI_BUS_HID;
                 strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME);
                 strcpy(device->pnp.device_class, ACPI_BUS_CLASS);