Patch submitted to lm-sensors@lm-sensors.org, here:

http://lists.lm-sensors.org/pipermail/lm-sensors/2010-January/027606.html

--- drivers/hwmon/asus_atk0110.c.orig	2010-01-07 00:07:45.000000000 +0100
+++ drivers/hwmon/asus_atk0110.c	2010-01-12 19:38:48.066204943 +0100
@@ -1141,12 +1141,7 @@ static int atk_add(struct acpi_device *d
 	buf.length = ACPI_ALLOCATE_BUFFER;
 	ret = acpi_evaluate_object_typed(data->atk_handle, BOARD_ID, NULL,
 			&buf, ACPI_TYPE_PACKAGE);
-	if (ret != AE_OK) {
-		dev_dbg(&device->dev, "atk: method MBIF not found\n");
-		err = -ENODEV;
-		goto out;
-	}
-
+	if (ret == AE_OK) {
 	obj = buf.pointer;
 	if (obj->package.count >= 2 &&
 			obj->package.elements[1].type == ACPI_TYPE_STRING) {
@@ -1154,6 +1149,15 @@ static int atk_add(struct acpi_device *d
 				obj->package.elements[1].string.pointer);
 	}
 	ACPI_FREE(buf.pointer);
+	} else {
+		/*
+		 * Some DSDTs do not have the MBIF method, but this should
+		 * not be treated as fatal error! just mention this fact
+		 * and continue.
+		 */
+		dev_dbg(&device->dev,
+			"atk: method MBIF not found, continuing...\n");
+	}
 
 	/* Check for hwmon methods: first check "old" style methods; note that
 	 * both may be present: in this case we stick to the old interface;