tree 20a9f5bd6ae04853aba2ab2f68d94134c6bea450
parent 391191c116c088edc6794a6e5ace10a13928c2f6
author Tejun Heo <htejun@gmail.com> 1211127313 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1211233908 -0400

sata_sil24: don't use NCQ if marvell 4140 PMP is attached

When 4140 PMP is attached to sil24, NCQ commands to fan out port 1 and
2 (0 based) often stall if commands are in progress to other ports.
I've tried a number of things but can't tell what's going on.  It
never happens w/ ahci and reportedly sata_mv which can issue NCQ
commands to multiple devices simultaneously like sil24 does.

Disable NCQ for devices behind 4140 PMP for the time being.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>