Revert "ACPI: video: Ignore devices that aren't present in hardware"

This reverts commit 0119509c4fbc9adcef1472817fda295334612976.

http://bugzilla.kernel.org/show_bug.cgi?id=9995

Signed-off-by: Len Brown <len.brown@intel.com>

drivers/acpi/video.c

@@ -1337,37 +1337,8 @@ acpi_video_bus_write_DOS(struct file *file,
 
 static int acpi_video_bus_add_fs(struct acpi_device *device)
 {
-	long device_id;
-	int status;
 	struct proc_dir_entry *entry = NULL;
 	struct acpi_video_bus *video;
-	struct device *dev;
-
-	status =
-	    acpi_evaluate_integer(device->handle, "_ADR", NULL, &device_id);
-
-	if (!ACPI_SUCCESS(status))
-		return -ENODEV;
-
-	/* We need to attempt to determine whether the _ADR refers to a
-	   PCI device or not. There's no terribly good way to do this,
-	   so the best we can hope for is to assume that there'll never
-	   be a video device in the host bridge */
-	if (device_id >= 0x10000) {
-		/* It looks like a PCI device. Does it exist? */
-		dev = acpi_get_physical_device(device->handle);
-	} else {
-		/* It doesn't look like a PCI device. Does its parent
-		   exist? */
-		acpi_handle phandle;
-		if (acpi_get_parent(device->handle, &phandle))
-			return -ENODEV;
-		dev = acpi_get_physical_device(phandle);
-	}
-	if (!dev)
-		return -ENODEV;
-	put_device(dev);
-
 
 
 	video = acpi_driver_data(device);