--- linux-2.6.9/drivers/pnp/pnpacpi/core.c.old	2004-11-04 11:56:25.000000000 +0100
+++ linux-2.6.9/drivers/pnp/pnpacpi/core.c	2004-11-04 12:13:46.000000000 +0100
@@ -239,7 +239,11 @@
 static int acpi_pnp_match(struct acpi_device *device,
 	struct acpi_driver	*driver)
 {
-	return (!ispnpidacpi(acpi_device_hid(device)) ||
+	acpi_handle temp = NULL;
+	acpi_status status;
+	/* don't lock non standard pnp device */
+	status = acpi_get_handle(device->handle, "_CRS", &temp);
+	return (ACPI_FAILURE(status) || !ispnpidacpi(acpi_device_hid(device)) ||
 		is_exclusive_device(device));
 }