This is a handful of one-liners, significantly:

  - don't disable "park" feature (faster).
  - cut'n'paste should have morphed "||" to "&&"
  - initialize qh as "live" (as now expected)

The "&&" was the most troublesome bug.  It could make
all kinds of things misbehave, not just those vt6202
issues some folks report.

The interesting bit about the "park" feature (NForce2
has it, maybe a few others) is that it made one disk
run 18% faster (according to hdparm).