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@xxxxxxxxx>
Tested-by: Pengfei Xu <pengfei.xu@xxxxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
---
drivers/thunderbolt/switch.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 9e5cc285cc8d..44e9b09de47a 100644
--- 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;
}
--
2.42.0
