From 42716425ad7e1b6529ec61c260c11176841f4b5f Mon Sep 17 00:00:00 2001
From: Sanjay R Mehta <sanju.mehta@amd.com>
Date: Tue, 3 Aug 2021 07:34:56 -0500
Subject: [PATCH] thunderbolt: Fix port linking by checking all adapters
Git-commit: 42716425ad7e1b6529ec61c260c11176841f4b5f
References: jsc#SLE-19355 stable-5.14.6
Patch-mainline: v5.15-rc1

In tb_switch_default_link_ports(), while linking of ports,
only odd-numbered ports (1,3,5..) are considered and even-numbered
ports are not considered.

AMD host router has lane adapters at 2 and 3 and link ports at adapter 2
is not considered due to which lane bonding gets disabled.

Hence added a fix such that all ports are considered during
linking of ports.

Signed-off-by: Basavaraj Natikar <Basavaraj.Natikar@amd.com>
Signed-off-by: Sanjay R Mehta <sanju.mehta@amd.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Oliver Neukum <oneukum@suse.com>
---
 drivers/thunderbolt/switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 2c44b24bc5d0..02774b0764e7 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -2466,7 +2466,7 @@ static void tb_switch_default_link_ports(struct tb_switch *sw)
 {
 	int i;
 
-	for (i = 1; i <= sw->config.max_port_number; i += 2) {
+	for (i = 1; i <= sw->config.max_port_number; i++) {
 		struct tb_port *port = &sw->ports[i];
 		struct tb_port *subordinate;
 
-- 
2.26.2