1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/scsi/scsi_transport_sas.c b/drivers/scsi/scsi_transport_sas.c
index ab3bd0b5ffd9..7d69a25d2004 100644
--- a/drivers/scsi/scsi_transport_sas.c
+++ b/drivers/scsi/scsi_transport_sas.c
@@ -1060,6 +1060,29 @@ int scsi_is_sas_port(const struct device *dev)
 EXPORT_SYMBOL(scsi_is_sas_port);
 
 /**
+ * sas_port_get_phy - try to take a reference on a port member
+ * @port: port to check
+ */
+struct sas_phy *sas_port_get_phy(struct sas_port *port)
+{
+        struct sas_phy *phy;
+
+        mutex_lock(&port->phy_list_mutex);
+        if (list_empty(&port->phy_list))
+                phy = NULL;
+        else {
+                struct list_head *ent = port->phy_list.next;
+
+                phy = list_entry(ent, typeof(*phy), port_siblings);
+                get_device(&phy->dev);
+        }
+        mutex_unlock(&port->phy_list_mutex);
+
+        return phy;
+}
+EXPORT_SYMBOL(sas_port_get_phy);
+
+/**
  * sas_port_add_phy - add another phy to a port to form a wide port
  * @port:       port to add the phy to
  * @phy:        phy to add