Merge tag 'thunderbolt-for-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt into usb-linus

Mika writes:
  "thunderbolt: Fixes for v6.2-rc5
  This includes fixes for:
    - on-board retimer scan return value
    - runtime PM during tb_retimer_scan()
    - USB3 link rate calculation
    - XDomain lane bonding.
  All these have been in linux-next with no reported issues."

* tag 'thunderbolt-for-v6.2-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/westeri/thunderbolt:
  thunderbolt: Disable XDomain lane 1 only in software connection manager
  thunderbolt: Use correct function to calculate maximum USB3 link rate
  thunderbolt: Do not call PM runtime functions in tb_retimer_scan()
  thunderbolt: Do not report errors if on-board retimers are found

drivers/thunderbolt/retimer.c

@@ -427,13 +427,6 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 {
 	u32 status[TB_MAX_RETIMER_INDEX + 1] = {};
 	int ret, i, last_idx = 0;
-	struct usb4_port *usb4;
-
-	usb4 = port->usb4;
-	if (!usb4)
-		return 0;
-
-	pm_runtime_get_sync(&usb4->dev);
 
 	/*
 	 * Send broadcast RT to make sure retimer indices facing this
@@ -441,7 +434,7 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 	 */
 	ret = usb4_port_enumerate_retimers(port);
 	if (ret)
-		goto out;
+		return ret;
 
 	/*
 	 * Enable sideband channel for each retimer. We can do this
@@ -471,12 +464,11 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 			break;
 	}
 
-	if (!last_idx) {
-		ret = 0;
-		goto out;
-	}
+	if (!last_idx)
+		return 0;
 
 	/* Add on-board retimers if they do not exist already */
+	ret = 0;
 	for (i = 1; i <= last_idx; i++) {
 		struct tb_retimer *rt;
 
@@ -490,10 +482,6 @@ int tb_retimer_scan(struct tb_port *port, bool add)
 		}
 	}
 
-out:
-	pm_runtime_mark_last_busy(&usb4->dev);
-	pm_runtime_put_autosuspend(&usb4->dev);
-
 	return ret;
 }
 

drivers/thunderbolt/tb.c

@@ -628,11 +628,15 @@ static void tb_scan_port(struct tb_port *port)
 			 * Downstream switch is reachable through two ports.
 			 * Only scan on the primary port (link_nr == 0).
 			 */
+
+	if (port->usb4)
+		pm_runtime_get_sync(&port->usb4->dev);
+
 	if (tb_wait_for_port(port, false) <= 0)
-		return;
+		goto out_rpm_put;
 	if (port->remote) {
 		tb_port_dbg(port, "port already has a remote\n");
-		return;
+		goto out_rpm_put;
 	}
 
 	tb_retimer_scan(port, true);
@@ -647,12 +651,12 @@ static void tb_scan_port(struct tb_port *port)
 		 */
 		if (PTR_ERR(sw) == -EIO || PTR_ERR(sw) == -EADDRNOTAVAIL)
 			tb_scan_xdomain(port);
-		return;
+		goto out_rpm_put;
 	}
 
 	if (tb_switch_configure(sw)) {
 		tb_switch_put(sw);
-		return;
+		goto out_rpm_put;
 	}
 
 	/*
@@ -681,7 +685,7 @@ static void tb_scan_port(struct tb_port *port)
 
 	if (tb_switch_add(sw)) {
 		tb_switch_put(sw);
-		return;
+		goto out_rpm_put;
 	}
 
 	/* Link the switches using both links if available */
@@ -733,6 +737,12 @@ static void tb_scan_port(struct tb_port *port)
 
 	tb_add_dp_resources(sw);
 	tb_scan_switch(sw);
+
+out_rpm_put:
+	if (port->usb4) {
+		pm_runtime_mark_last_busy(&port->usb4->dev);
+		pm_runtime_put_autosuspend(&port->usb4->dev);
+	}
 }
 
 static void tb_deactivate_and_free_tunnel(struct tb_tunnel *tunnel)

drivers/thunderbolt/tunnel.c

@@ -1275,7 +1275,7 @@ static void tb_usb3_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
 		return;
 	} else if (!ret) {
 		/* Use maximum link rate if the link valid is not set */
-		ret = usb4_usb3_port_max_link_rate(tunnel->src_port);
+		ret = tb_usb3_max_link_rate(tunnel->dst_port, tunnel->src_port);
 		if (ret < 0) {
 			tb_tunnel_warn(tunnel, "failed to read maximum link rate\n");
 			return;

drivers/thunderbolt/xdomain.c

@@ -1419,12 +1419,19 @@ static int tb_xdomain_get_properties(struct tb_xdomain *xd)
 	 * registered, we notify the userspace that it has changed.
 	 */
 	if (!update) {
-		struct tb_port *port;
+		/*
+		 * Now disable lane 1 if bonding was not enabled. Do
+		 * this only if bonding was possible at the beginning
+		 * (that is we are the connection manager and there are
+		 * two lanes).
+		 */
+		if (xd->bonding_possible) {
+			struct tb_port *port;
 
-		/* Now disable lane 1 if bonding was not enabled */
-		port = tb_port_at(xd->route, tb_xdomain_parent(xd));
-		if (!port->bonded)
-			tb_port_disable(port->dual_link_port);
+			port = tb_port_at(xd->route, tb_xdomain_parent(xd));
+			if (!port->bonded)
+				tb_port_disable(port->dual_link_port);
+		}
 
 		if (device_add(&xd->dev)) {
 			dev_err(&xd->dev, "failed to add XDomain device\n");