By reading from method _CFG to make sure we bind on the correct VPC2004 device.
Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
static int ideapad_acpi_add(struct acpi_device *adevice)
{
- int i;
+ int i, cfg;
int devs_present[5];
struct ideapad_private *priv;
+ if (read_method_int(adevice->handle, "_CFG", &cfg))
+ return -ENODEV;
+
for (i = IDEAPAD_DEV_CAMERA; i < IDEAPAD_DEV_KILLSW; i++) {
devs_present[i] = ideapad_dev_exists(i);
if (devs_present[i] < 0)