thunderbolt: Only configure USB4 wake for lane 0 adapters

Only USB4 lane 0 adapter has the USB4 port capability for wakes so only
program wakes on such adapters.

Fixes: b2911a593a70 ("thunderbolt: Enable wakes from system suspend")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/thunderbolt/usb4.c b/drivers/thunderbolt/usb4.c
index 40f1357..f2583b4 100644 (file)
--- a/drivers/thunderbolt/usb4.c
+++ b/drivers/thunderbolt/usb4.c
@@ -421,8 +421,12 @@ int usb4_switch_set_wake(struct tb_switch *sw, unsigned int flags)
         * upstream USB4 port.
         */
        tb_switch_for_each_port(sw, port) {
+               if (!tb_port_is_null(port))
+                       continue;
                if (!route && tb_is_upstream_port(port))
                        continue;
+               if (!port->cap_usb4)
+                       continue;
 
                ret = tb_port_read(port, &val, TB_CFG_PORT,
                                   port->cap_usb4 + PORT_CS_19, 1);