Christoph Hellwig [off-list ref] writes:

Replace the current NULL-terminated array of default groups with a linked
list.  This gets rid of lots of nasty code to size and/or dynamically
allocate the array.

While we're at it also provide a conveniant helper to remove the default
groups.

looks ok to my eyes. For drivers/usb/gadget:

Acked-by: Felipe Balbi <balbi@kernel.org>

-- 
balbi