K 10 svn:author V 3 mav K 8 svn:date V 27 2013-04-24T19:24:53.187534Z K 7 svn:log V 388 MFC r248698: Depending on combination of running commands (NCQ/non-NCQ) try to avoid extra read from PxCI/PxSACT registers. If only NCQ commands are running, we don't really need PxCI. If only non-NCQ commands are running we don't need PxSACT. Mixed set may happen only on controllers with FIS-based switching when port multiplier is attached, and then we have to read both registers. END