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path: root/drivers/thunderbolt/switch.c
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Diffstat (limited to 'drivers/thunderbolt/switch.c')
-rw-r--r--drivers/thunderbolt/switch.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 43171cc1cc2d..bd5815f8f23b 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -2725,6 +2725,13 @@ int tb_switch_lane_bonding_enable(struct tb_switch *sw)
!tb_port_is_width_supported(down, TB_LINK_WIDTH_DUAL))
return 0;
+ /*
+ * Both lanes need to be in CL0. Here we assume lane 0 already be in
+ * CL0 and check just for lane 1.
+ */
+ if (tb_wait_for_port(down->dual_link_port, false) <= 0)
+ return -ENOTCONN;
+
ret = tb_port_lane_bonding_enable(up);
if (ret) {
tb_port_warn(up, "failed to enable lane bonding\n");