tree c153c51f2857e053cc40bada5a520d94fea4a354
parent 6a87e42e955ff27e07a77f65f8f077dc7c4171e1
author Tejun Heo <tj@kernel.org> 1225708027 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1225778913 -0500

libata: mask off DET when restoring SControl for detach

libata restores SControl on detach; however, trying to restore
non-zero DET can cause undeterministic behavior including PMP device
going offline till power cycling.  Mask off DET when restoring
SControl.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>