tree c5711139bd95053b9b5c8897e3f7cd50b8331141
parent 03f60840fa462e92220b093f778b2426ceab23af
author Tejun Heo <tj@kernel.org> 1227760608 +0900
committer Jeff Garzik <jgarzik@redhat.com> 1228157367 -0500

libata: blacklist Seagate drives which time out FLUSH_CACHE when used with NCQ

Some recent Seagate harddrives have firmware bug which causes FLUSH
CACHE to timeout under certain circumstances if NCQ is being used.
This can be worked around by disabling NCQ and fixed by updating the
firmware.  Implement ATA_HORKAGE_FIRMWARE_UPDATE and blacklist these
devices.

The wiki page has been updated to contain information on this issue.

  http://ata.wiki.kernel.org/index.php/Known_issues

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