K 10
svn:author
V 6
adrian
K 8
svn:date
V 27
2012-07-27T10:38:17.256281Z
K 7
svn:log
V 290
Modify ath_descdma_cleanup() to handle ath_descdma instances with no
buffers.

ath_descdma is now being used for things other than the classical
combination of ath_buf + ath_desc allocations.  In this particular case,
don't try to free and blank out the ath_buf list if it's not passed in.

END