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>
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index 511e432..70afa37 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -701,7 +701,11 @@
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;