K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2012-03-09T08:36:30.969559Z
K 7
svn:log
V 284
Insert extra paranoia into the ath(4) driver.

This function must be called with both the source and destination TXQs
locked or things will get hairy.

I added this as part of some debugging in a PR but it turned out to not
be the cause.  I still think it's -correct- so, here it is.

END