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-rw-r--r--drivers/acpi/video.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 5d7075d25700..440eadf2d32c 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1722,6 +1722,9 @@ static int acpi_video_bus_add(struct acpi_device *device)
int error;
acpi_status status;
+ if (device->handler)
+ return -EINVAL;
+
status = acpi_walk_namespace(ACPI_TYPE_DEVICE,
device->parent->handle, 1,
acpi_video_bus_match, NULL,