ieee1394: prevent device binding of raw1394, video1394, dv1394

These drivers don't need to match any unit_directory type device.
They just need the id_table for module autoloading per module alias.

Not binding any of these drivers allows special-purpose drivers with
similar or same IDs to bind to devices.  This currently only benefits
out-of-tree drivers; on the other hand it is in no way detrimental to
in-tree drivers.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

drivers/ieee1394/dv1394.c

@@ -2180,7 +2180,6 @@ MODULE_DEVICE_TABLE(ieee1394, dv1394_id_table);
 
 static struct hpsb_protocol_driver dv1394_driver = {
 	.name = "dv1394",
-	.id_table	= dv1394_id_table,
 };
 
 

drivers/ieee1394/nodemgr.c

@@ -701,7 +701,11 @@ static int nodemgr_bus_match(struct device * dev, struct device_driver * drv)
 		return 0;
 
 	driver = container_of(drv, struct hpsb_protocol_driver, driver);
-	for (id = driver->id_table; id->match_flags != 0; id++) {
+	id = driver->id_table;
+	if (!id)
+		return 0;
+
+	for (; id->match_flags != 0; id++) {
 		if ((id->match_flags & IEEE1394_MATCH_VENDOR_ID) &&
 		    id->vendor_id != ud->vendor_id)
 			continue;

drivers/ieee1394/raw1394.c

@@ -2959,7 +2959,6 @@ MODULE_DEVICE_TABLE(ieee1394, raw1394_id_table);
 
 static struct hpsb_protocol_driver raw1394_driver = {
 	.name = "raw1394",
-	.id_table = raw1394_id_table,
 };
 
 /******************************************************************************/

drivers/ieee1394/video1394.c

@@ -1316,7 +1316,6 @@ MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
 
 static struct hpsb_protocol_driver video1394_driver = {
 	.name = VIDEO1394_DRIVER_NAME,
-	.id_table	= video1394_id_table,
 };