Revert "libata: export host controller number thru /sys"

This reverts commit 1757d90.

Discussion continues upstream.

drivers/ata/libata-core.c

@@ -99,7 +99,6 @@ static void ata_dev_xfermask(struct ata_device *dev);
 static unsigned long ata_dev_blacklisted(const struct ata_device *dev);
 
 atomic_t ata_print_id = ATOMIC_INIT(0);
-atomic_t host_print_id = ATOMIC_INIT(0);
 
 struct ata_force_param {
 	const char	*name;
@@ -6119,9 +6118,6 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
 	for (i = host->n_ports; host->ports[i]; i++)
 		kfree(host->ports[i]);
 
-	/* track host controller */
-	host->host_id = atomic_inc_return(&host_print_id);
-
 	/* give ports names and add SCSI hosts */
 	for (i = 0; i < host->n_ports; i++)
 		host->ports[i]->print_id = atomic_inc_return(&ata_print_id);

drivers/ata/libata-transport.c

@@ -284,7 +284,7 @@ int ata_tport_add(struct device *parent,
 
 	dev->parent = get_device(parent);
 	dev->release = ata_tport_release;
-	dev_set_name(dev, "ata%d.%d", ap->host->host_id, ap->print_id);
+	dev_set_name(dev, "ata%d", ap->print_id);
 	transport_setup_device(dev);
 	error = device_add(dev);
 	if (error) {

include/linux/libata.h

@@ -546,7 +546,6 @@ struct ata_host {
 	void			*private_data;
 	struct ata_port_operations *ops;
 	unsigned long		flags;
-	unsigned int            host_id; /* user visible host ID */
 
 	struct mutex		eh_mutex;
 	struct task_struct	*eh_owner;