--- linux-2.6.9/drivers/pnp/pnpacpi/core.c	2004-11-22 20:35:58.000000000 +0100
+++ linux-2.6.9/drivers/pnp/pnpacpi/core.c	2004-11-26 14:46:54.000000000 +0100
@@ -124,6 +124,10 @@
 	struct pnp_dev *dev;
 
 	pnp_dbg("ACPI device : hid %s", acpi_device_hid(device));
+
+	if(!device->status.present)
+		return -ENODEV;
+
 	dev =  pnpacpi_kmalloc(sizeof(struct pnp_dev), GFP_KERNEL);
 	if (!dev) {
 		pnp_err("Out of memory");