K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2013-04-01T20:57:13.161222Z
K 7
svn:log
V 447
Ensure that we only call the busdma unmap/flush routines once, when
the buffer is being freed.

* When buffers are cloned, the original mapping isn't copied but it
  wasn't freeing the mapping until later.  To be safe, free the
  mapping when the buffer is cloned.

* ath_freebuf() now no longer calls the busdma sync/unmap routines.

* ath_tx_freebuf() now calls sync/unmap.

* Call sync first, before calling unmap.

Tested:

* AR5416, STA mode

END