K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2011-03-01T14:43:37.766458Z
K 7
svn:log
V 337
Similar to 189574, properly handle subclasses of bus drivers when deleting
a driver during kldunload.  Specifically, recursively walk the tree of
subclasses of a given driver attachment's bus device class detaching all
instances of that driver for each class and its subclasses.

Reported by:	bschmidt
Reviewed by:	imp
MFC after:	1 week

END