scsi: libsas: Move sas_add_parent_port() to sas_expander.c

Move sas_add_parent_port() to sas_expander.c and rename it to
sas_ex_add_parent_port() as it is only used in this file.
Signed-off-by: Xingui Yang <yangxingui@huawei.com>
Link: https://lore.kernel.org/r/20240312141103.31358-3-yangxingui@huawei.comReviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/libsas/sas_expander.c

@@ -33,6 +33,21 @@ static void sas_port_add_ex_phy(struct sas_port *port, struct ex_phy *ex_phy)
 	ex_phy->phy_state = PHY_DEVICE_DISCOVERED;
 }
 
+static void sas_ex_add_parent_port(struct domain_device *dev, int phy_id)
+{
+	struct expander_device *ex = &dev->ex_dev;
+	struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
+
+	if (!ex->parent_port) {
+		ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
+		/* FIXME: error handling */
+		BUG_ON(!ex->parent_port);
+		BUG_ON(sas_port_add(ex->parent_port));
+		sas_port_mark_backlink(ex->parent_port);
+	}
+	sas_port_add_phy(ex->parent_port, ex_phy->phy);
+}
+
 /* ---------- SMP task management ---------- */
 
 /* Give it some long enough timeout. In seconds. */
@@ -968,11 +983,11 @@ static int sas_ex_discover_dev(struct domain_device *dev, int phy_id)
 
 	/* Parent and domain coherency */
 	if (!dev->parent && sas_phy_match_port_addr(dev->port, ex_phy)) {
-		sas_add_parent_port(dev, phy_id);
+		sas_ex_add_parent_port(dev, phy_id);
 		return 0;
 	}
 	if (dev->parent && sas_phy_match_dev_addr(dev->parent, ex_phy)) {
-		sas_add_parent_port(dev, phy_id);
+		sas_ex_add_parent_port(dev, phy_id);
 		if (ex_phy->routing_attr == TABLE_ROUTING)
 			sas_configure_phy(dev, phy_id, dev->port->sas_addr, 1);
 		return 0;

drivers/scsi/libsas/sas_internal.h

@@ -189,21 +189,6 @@ static inline void sas_phy_set_target(struct asd_sas_phy *p, struct domain_devic
 	}
 }
 
-static inline void sas_add_parent_port(struct domain_device *dev, int phy_id)
-{
-	struct expander_device *ex = &dev->ex_dev;
-	struct ex_phy *ex_phy = &ex->ex_phy[phy_id];
-
-	if (!ex->parent_port) {
-		ex->parent_port = sas_port_alloc(&dev->rphy->dev, phy_id);
-		/* FIXME: error handling */
-		BUG_ON(!ex->parent_port);
-		BUG_ON(sas_port_add(ex->parent_port));
-		sas_port_mark_backlink(ex->parent_port);
-	}
-	sas_port_add_phy(ex->parent_port, ex_phy->phy);
-}
-
 static inline struct domain_device *sas_alloc_device(void)
 {
 	struct domain_device *dev = kzalloc(sizeof(*dev), GFP_KERNEL);