diff mbox series

[3/3] thunderbolt: Disable XDomain lane 1 only in software connection manager

Message ID 20230104080601.45562-4-mika.westerberg@linux.intel.com (mailing list archive)
State Accepted
Commit 84ee211c83212f4d35b56e0603acdcc41f860f1b
Headers show
Series thunderbolt: A couple of fixes for v6.2-rc | expand

Commit Message

Mika Westerberg Jan. 4, 2023, 8:06 a.m. UTC 
When firmware connection manager is in use we should not touch the lane
adapter (well or any) configuration space so do this only when we know
that the software connection manager is active.

Fixes: 8e1de7042596 ("thunderbolt: Add support for XDomain lane bonding")
Cc: stable@vger.kernel.org
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
---
 drivers/thunderbolt/xdomain.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index cfa83486c9da..3c51e47dd86b 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/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");