K 10
svn:author
V 3
ian
K 8
svn:date
V 27
2013-03-23T17:17:06.522486Z
K 7
svn:log
V 502
Don't check and warn about pmap mismatch on every call to busdma sync.
With some recent busdma refactoring, sometimes it happens that a sync
op gets called when bus_dmamap_load() never got called, which results
in a spurious warning about a map mismatch when no sync operations will
actually happen anyway.  Now the check is done only if a sync operation
is actually performed, and the result of the check is a panic, not just
a printf.

Reviewed by:	cognet (who prevented me from donning a point hat)

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