libata: Grand renaming.

The biggest change is that ata_host_set is renamed to ata_host.

* ata_host_set			=> ata_host
* ata_probe_ent->host_flags	=> ata_probe_ent->port_flags
* ata_probe_ent->host_set_flags	=> ata_probe_ent->_host_flags
* ata_host_stats		=> ata_port_stats
* ata_port->host		=> ata_port->scsi_host
* ata_port->host_set		=> ata_port->host
* ata_port_info->host_flags	=> ata_port_info->flags
* ata_(.*)host_set(.*)\(\)	=> ata_\1host\2()

The leading underscore in ata_probe_ent->_host_flags is to avoid
reusing ->host_flags for different purpose.  Currently, the only user
of the field is libata-bmdma.c and probe_ent itself is scheduled to be
removed.

ata_port->host is reused for different purpose but this field is used
inside libata core proper and of different type.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 2c476ee..b1b5104 100644
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -200,7 +200,7 @@
 	/* synchronize with port task */
 	ata_port_flush_task(ap);
 
-	/* synchronize with host_set lock and sort out timeouts */
+	/* synchronize with host lock and sort out timeouts */
 
 	/* For new EH, all qcs are finished in one of three ways -
 	 * normal completion, error completion, and SCSI timeout.
@@ -377,7 +377,7 @@
 	spin_unlock_irqrestore(ap->lock, flags);
 
 	/* make sure SCSI EH is complete */
-	if (scsi_host_in_recovery(ap->host)) {
+	if (scsi_host_in_recovery(ap->scsi_host)) {
 		msleep(10);
 		goto retry;
 	}
@@ -486,7 +486,7 @@
  *	other commands are drained.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_qc_schedule_eh(struct ata_queued_cmd *qc)
 {
@@ -513,14 +513,14 @@
  *	all commands are drained.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 void ata_port_schedule_eh(struct ata_port *ap)
 {
 	WARN_ON(!ap->ops->error_handler);
 
 	ap->pflags |= ATA_PFLAG_EH_PENDING;
-	scsi_schedule_eh(ap->host);
+	scsi_schedule_eh(ap->scsi_host);
 
 	DPRINTK("port EH scheduled\n");
 }
@@ -532,7 +532,7 @@
  *	Abort all active qc's of @ap and schedule EH.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS:
  *	Number of aborted qc's.
@@ -575,7 +575,7 @@
  *	is frozen.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  */
 static void __ata_port_freeze(struct ata_port *ap)
 {
@@ -596,7 +596,7 @@
  *	Abort and freeze @ap.
  *
  *	LOCKING:
- *	spin_lock_irqsave(host_set lock)
+ *	spin_lock_irqsave(host lock)
  *
  *	RETURNS:
  *	Number of aborted commands.