thunderbolt: Send uevent after asymmetric/symmetric switch

We should send uevent to userspace whenever the link speed or width
changes but tb_switch_asym_enable() and tb_switch_asym_disable() set the
sw->link_width already so tb_switch_update_link_attributes() never
noticed the change.

Fix this so that we let tb_switch_update_link_attributes() update the
fields accordingly.

Fixes: 81af2952e606 ("thunderbolt: Add support for asymmetric link")
Reported-by: Pengfei Xu <pengfei.xu@intel.com>
Tested-by: Pengfei Xu <pengfei.xu@intel.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>

diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 9e5cc285cc8d3e16c0281eb1e5d8f0621c168bd4..44e9b09de47a5a01a0a22d48c9d637bdd7c7bf68 100644 (file)
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -2880,6 +2880,7 @@ static int tb_switch_lane_bonding_disable(struct tb_switch *sw)
        return tb_port_wait_for_link_width(down, TB_LINK_WIDTH_SINGLE, 100);
 }
 
+/* Note updating sw->link_width done in tb_switch_update_link_attributes() */
 static int tb_switch_asym_enable(struct tb_switch *sw, enum tb_link_width width)
 {
        struct tb_port *up, *down, *port;
@@ -2919,10 +2920,10 @@ static int tb_switch_asym_enable(struct tb_switch *sw, enum tb_link_width width)
                        return ret;
        }
 
-       sw->link_width = width;
        return 0;
 }
 
+/* Note updating sw->link_width done in tb_switch_update_link_attributes() */
 static int tb_switch_asym_disable(struct tb_switch *sw)
 {
        struct tb_port *up, *down;
@@ -2957,7 +2958,6 @@ static int tb_switch_asym_disable(struct tb_switch *sw)
                        return ret;
        }
 
-       sw->link_width = TB_LINK_WIDTH_DUAL;
        return 0;
 }