K 10
svn:author
V 8
hselasky
K 8
svn:date
V 27
2014-02-12T08:04:38.755016Z
K 7
svn:log
V 281
Issue doorbell twice before finally freeing the DMA descriptors. This
should fix DMA descriptor caching issues seen with the EHCI controller
found in Google Chromebook C720 during removal and insertion of USB
devices.

MFC after:	1 week
Reported by:	Matthew Dillon at DragonFlyBSD

END