[libata] Introduce ata_id_has_unload()

Add a function to check an ATA device's id for head unload support as
specified in ATA-7.

Signed-off-by: Elias Oltmanns <eo@nebensachen.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Elias Oltmanns 2008-09-19 23:46:01 +02:00 committed by Jeff Garzik
commit ea6ce53cd5