K 10
svn:author
V 3
mav
K 8
svn:date
V 27
2013-10-13T10:22:33.968725Z
K 7
svn:log
V 440
Fix several real and hypothetical cases around device hot-plug:
 - Do not drop potentially last periph reference from the adastart().
That caused use-after-free condition in scheduling code.  Add KASSERT()
into camperiphfree() to simplify debugging if the issue return some day.
 - Rework daclose() and adaclose() to properly cleanup even if the periph
was invalidated.
 - Add return status checks for number of cam_periph_acquire() calls.

END