K 10
svn:author
V 4
avos
K 8
svn:date
V 27
2016-06-20T22:45:19.686373Z
K 7
svn:log
V 285
rtwn: fix Tx processing, add some busdma synchronization.

1) Unload mbuf instead of descriptor in rtwn_tx_done().
2) Add more synchronization for device visible mappings before
touching the memory.
3) Improve watchdog timer logic.

Reported and tested by:		mva

Approved by:	re (gjb)

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