libata: clean up lpm related symbols and sysfs show/store functions

Link power management related symbols are in confusing state w/ mixed
usages of lpm, ipm and pm.  This patch cleans up lpm related symbols
and sysfs show/store functions as follows.

* lpm states - NOT_AVAILABLE, MIN_POWER, MAX_PERFORMANCE and
  MEDIUM_POWER are renamed to ATA_LPM_UNKNOWN and
  ATA_LPM_{MIN|MAX|MED}_POWER.

* Pre/postfixes are unified to lpm.

* sysfs show/store functions for link_power_management_policy were
  curiously named get/put and unnecessarily complex.  Renamed to
  show/store and simplified.

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

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 99d0e5a51148..68f7b4216501 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1209,7 +1209,7 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
                                    0x100 + ap->port_no * 0x80, "port");
 
                 /* set initial link pm policy */
-                ap->pm_policy = NOT_AVAILABLE;
+                ap->lpm_policy = ATA_LPM_UNKNOWN;
 
                 /* set enclosure management message type */
                 if (ap->flags & ATA_FLAG_EM)