diff mbox series

[5.10,202/306] thunderbolt: Fix port linking by checking all adapters

Message ID 20210916155800.938708217@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Sept. 16, 2021, 3:59 p.m. UTC 
From: Sanjay R Mehta <sanju.mehta@amd.com>

[ Upstream commit 42716425ad7e1b6529ec61c260c11176841f4b5f ]

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: Sasha Levin <sashal@kernel.org>
---
 drivers/thunderbolt/switch.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 9a272a516b2d..c4b157c29af7 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -2204,7 +2204,7 @@  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;