isci: clarify phy to port lookups

While cleaning up the driver it is very tempting to convert scic_sds_get_*
macros to their open coded equivalent.  They are all just pointer dereferences
*except* scic_sds_phy_get_port() which returns NULL if the phy is assigned to
the dummy port.  Clarify this by renaming it to phy_get_non_dummy_port().
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

drivers/scsi/isci/host.c

@@ -983,7 +983,7 @@ static enum sci_status scic_sds_controller_start_next_phy(struct scic_sds_contro
 			sci_phy = &ihost->phys[index].sci;
 			state = sci_phy->state_machine.current_state_id;
 
-			if (!scic_sds_phy_get_port(sci_phy))
+			if (!phy_get_non_dummy_port(sci_phy))
 				continue;
 
 			/* The controller start operation is complete iff:
@@ -1014,7 +1014,7 @@ static enum sci_status scic_sds_controller_start_next_phy(struct scic_sds_contro
 		sci_phy = &ihost->phys[scic->next_phy_to_start].sci;
 
 		if (oem->controller.mode_type == SCIC_PORT_MANUAL_CONFIGURATION_MODE) {
-			if (scic_sds_phy_get_port(sci_phy) == NULL) {
+			if (phy_get_non_dummy_port(sci_phy) == NULL) {
 				scic->next_phy_to_start++;
 
 				/* Caution recursion ahead be forwarned

drivers/scsi/isci/phy.c

@@ -287,7 +287,7 @@ static void scic_sds_phy_sata_timeout(void *phy)
  * port (i.e. it's contained in the dummy port). !NULL All other
  * values indicate a handle/pointer to the port containing the phy.
  */
-struct scic_sds_port *scic_sds_phy_get_port(
+struct scic_sds_port *phy_get_non_dummy_port(
 	struct scic_sds_phy *sci_phy)
 {
 	if (scic_sds_port_get_index(sci_phy->owning_port) == SCIC_SDS_DUMMY_PORT)
@@ -893,7 +893,7 @@ enum sci_status scic_sds_phy_event_handler(struct scic_sds_phy *sci_phy,
 			break;
 		case SCU_EVENT_BROADCAST_CHANGE:
 			/* Broadcast change received. Notify the port. */
-			if (scic_sds_phy_get_port(sci_phy) != NULL)
+			if (phy_get_non_dummy_port(sci_phy) != NULL)
 				scic_sds_port_broadcast_change_received(sci_phy->owning_port, sci_phy);
 			else
 				sci_phy->bcn_received_while_port_unassigned = true;
@@ -1238,7 +1238,7 @@ static void scic_sds_phy_stopped_state_enter(void *object)
 
 	if (sci_phy->state_machine.previous_state_id != SCI_BASE_PHY_STATE_INITIAL)
 		scic_sds_controller_link_down(scic_sds_phy_get_controller(sci_phy),
-					      scic_sds_phy_get_port(sci_phy),
+					      phy_get_non_dummy_port(sci_phy),
 					      sci_phy);
 }
 
@@ -1255,7 +1255,7 @@ static void scic_sds_phy_starting_state_enter(void *object)
 
 	if (sci_phy->state_machine.previous_state_id == SCI_BASE_PHY_STATE_READY)
 		scic_sds_controller_link_down(scic_sds_phy_get_controller(sci_phy),
-					      scic_sds_phy_get_port(sci_phy),
+					      phy_get_non_dummy_port(sci_phy),
 					      sci_phy);
 
 	sci_base_state_machine_change_state(&sci_phy->state_machine,
@@ -1267,7 +1267,7 @@ static void scic_sds_phy_ready_state_enter(void *object)
 	struct scic_sds_phy *sci_phy = object;
 
 	scic_sds_controller_link_up(scic_sds_phy_get_controller(sci_phy),
-				    scic_sds_phy_get_port(sci_phy),
+				    phy_get_non_dummy_port(sci_phy),
 				    sci_phy);
 
 }

drivers/scsi/isci/phy.h

@@ -524,8 +524,7 @@ void scic_sds_phy_construct(
 	struct scic_sds_port *owning_port,
 	u8 phy_index);
 
-struct scic_sds_port *scic_sds_phy_get_port(
-	struct scic_sds_phy *this_phy);
+struct scic_sds_port *phy_get_non_dummy_port(struct scic_sds_phy *sci_phy);
 
 void scic_sds_phy_set_port(
 	struct scic_sds_phy *this_phy,

drivers/scsi/isci/port.c

@@ -485,7 +485,7 @@ static enum sci_status scic_sds_port_set_phy(
 	 * not already have a phy assinged to the phy index. */
 	if (
 		(port->phy_table[phy->phy_index] == NULL)
-		&& (scic_sds_phy_get_port(phy) == NULL)
+		&& (phy_get_non_dummy_port(phy) == NULL)
 		&& scic_sds_port_is_valid_phy_assignment(port, phy->phy_index)
 		) {
 		/*
@@ -516,7 +516,7 @@ static enum sci_status scic_sds_port_clear_phy(
 {
 	/* Make sure that this phy is part of this port */
 	if (port->phy_table[phy->phy_index] == phy &&
-	    scic_sds_phy_get_port(phy) == port) {
+	    phy_get_non_dummy_port(phy) == port) {
 		struct scic_sds_controller *scic = port->owning_controller;
 		struct isci_host *ihost = scic_to_ihost(scic);
 

drivers/scsi/isci/port_config.c

@@ -353,7 +353,7 @@ static void scic_sds_mpc_agent_timeout_handler(void *object)
 
 		if (configure_phy_mask & (1 << index)) {
 			port_agent->link_up_handler(scic, port_agent,
-						    scic_sds_phy_get_port(sci_phy),
+						    phy_get_non_dummy_port(sci_phy),
 						    sci_phy);
 		}
 	}