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

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This reverts commit 3fa2cdcc45.

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

Signed-off-by: Len Brown <len.brown>
This commit is contained in:
Len Brown 2008-03-18 01:43:53 -04:00
parent bde4f8fa8d
commit f0d6752c9f
1 changed files with 1 additions and 30 deletions
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31
drivers/acpi/video.c
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@ -807,40 +807,11 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
static int acpi_video_bus_check(struct acpi_video_bus *video)
{
acpi_status status = -ENOENT;
long device_id;
struct device *dev;
struct acpi_device *device;
if (!video)
return -EINVAL;
device = video->device;
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);
/* Since there is no HID, CID and so on for VGA driver, we have
* to check well known required nodes.
*/