K 10
svn:author
V 8
hselasky
K 8
svn:date
V 27
2014-01-11T08:10:01.245577Z
K 7
svn:log
V 241
Force clearing of event ring interrupts. The "Intel Lynx Point" XHCI
controller found in the MBP2013 has been observed to not work properly
unless this operation is performed.

MFC after:	1 week
Tested by:	Huang Wen Hui <huanghwh@gmail.com>

END