libata: Power off empty ports

Give users the option of completely powering off unoccupied
SATA ports using the existing min_power link_power_management_policy
option.  When the use selects this option on an empty port, we
will power the port off by setting DET to off.  For occupied ports,
behavior is unchanged.

Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
This commit is contained in:
Kristen Carlson Accardi 2011-03-04 10:24:11 -08:00 committed by Jeff Garzik
parent 0afc6f5ba9
commit 8a745f1f39
3 changed files with 10 additions and 3 deletions

View file

@ -1151,6 +1151,7 @@ extern void ata_do_eh(struct ata_port *ap, ata_prereset_fn_t prereset,
ata_reset_fn_t softreset, ata_reset_fn_t hardreset,
ata_postreset_fn_t postreset);
extern void ata_std_error_handler(struct ata_port *ap);
extern int ata_link_nr_enabled(struct ata_link *link);
/*
* Base operations to inherit from and initializers for sht