tree 066f5e76a52f2cc5b6ad23c2606911dbe3af4921
parent a568d1d2e2aff4f114b087c06bfd350e945ad6cf
author Tejun Heo <tj@kernel.org> 1224603094 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1224722563 -0400

libata: set device class to NONE if phys_offline

Reset methods don't have access to phys link status for slave links
and may incorrectly indicate device presence causing unnecessary probe
failures for unoccupied links.  This patch clears device class to NONE
during post-reset processing if phys link is offline.

As on/offlineness semantics is strictly defined and used in multiple
places by the core layer, this won't change behavior for drivers which
don't use slave links.

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