K 10
svn:author
V 7
yongari
K 8
svn:date
V 27
2008-08-22T04:52:21.365146Z
K 7
svn:log
V 317
Because bfe(4) knows interrupt mask value there is no need to read
interrupt mask register again. This saves one register access per
each interrupt.
Also don't try to process frames when driver is not running.

Tested by:	kib, Gleb Kurtsou gleb.kurtsou at gmail dot com
		Ulrich Spoerlein uspoerlein at gmail dot com

END