From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Wed, 11 Mar 2020 16:00:46 +0300
Subject: thunderbolt: Make usb4_switch_map_usb3_down() also return enabled
 ports
Git-commit: 77cfa40fcdea9f75255a9785d345fa25e4a3ad0b
Patch-mainline: v5.9-rc1
References: jsc#SLE-14130

We need to call this on enabled ports in order to find the mapping from
host router USB4 port to a USB 3.x downstream adapter, so make the
function return enabled ports as well.

While there fix parameter alignment in tb_find_usb3_down().

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/thunderbolt/tb.c   | 14 +++-----------
 drivers/thunderbolt/usb4.c |  2 +-
 2 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/thunderbolt/tb.c b/drivers/thunderbolt/tb.c
index 2da82259e77c..82f62a023a4b 100644
--- a/drivers/thunderbolt/tb.c
+++ b/drivers/thunderbolt/tb.c
@@ -206,22 +206,14 @@ static struct tb_port *tb_find_unused_port(struct tb_switch *sw,
 }
 
 static struct tb_port *tb_find_usb3_down(struct tb_switch *sw,
-					const struct tb_port *port)
+					 const struct tb_port *port)
 {
 	struct tb_port *down;
 
 	down = usb4_switch_map_usb3_down(sw, port);
-	if (down) {
-		if (WARN_ON(!tb_port_is_usb3_down(down)))
-			goto out;
-		if (WARN_ON(tb_usb3_port_is_enabled(down)))
-			goto out;
-
+	if (down && !tb_usb3_port_is_enabled(down))
 		return down;
-	}
-
-out:
-	return tb_find_unused_port(sw, TB_TYPE_USB3_DOWN);
+	return NULL;
 }
 
 static int tb_tunnel_usb3(struct tb *tb, struct tb_switch *sw)
diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c
index 393771d50962..375a8c459201 100644
--- a/drivers/thunderbolt/usb4.c
+++ b/drivers/thunderbolt/usb4.c
@@ -759,7 +759,7 @@ struct tb_port *usb4_switch_map_usb3_down(struct tb_switch *sw,
 		if (!tb_port_is_usb3_down(p))
 			continue;
 
-		if (usb_idx == usb4_idx && !tb_usb3_port_is_enabled(p))
+		if (usb_idx == usb4_idx)
 			return p;
 
 		usb_idx++;