On Tue, 2021-06-08 at 09:54 +0300, Heikki Krogerus wrote: > On Tue, Jun 08, 2021 at 09:42:09AM +0300, Heikki Krogerus wrote: > > Please check does the partner device get removed. What do you have > > under /sys/class/typec after that happens? > > Oh yes. Could you also share the trace output when that happens? > > cd /sys/kernel/debug/tracing > echo 1 > events/ucsi/enable > # now reproduce the issue > cat trace > ucsi.trace So, the partner device is still there when this happens (see below). I also only see a single event in the trace for the fast plug/unplug case: kworker/u16:8-1771 [003] .... 18848.872145: ucsi_connector_change: port1 status: change=4a04, opmode=5, connected=1, sourcing=0, partner_flags=1, partner_type=1, request_data_obj=1304b12c, BC status=1 The typec port/partner states is: port1-partner/accessory_mode:none port1-partner/supports_usb_power_delivery:no port1-partner/uevent:DEVTYPE=typec_partner port1-partner/usb_power_delivery_revision:0.0 and port0/data_role:host [device] port0/power_operation_mode:default port0/power_role:source [sink] port0/supported_accessory_modes:none port0/uevent:DEVTYPE=typec_port port0/uevent:TYPEC_PORT=port0 port0/usb_power_delivery_revision:2.0 port0/usb_typec_revision:1.0 port0/vconn_source:no port1/data_role:host [device] port1/power_operation_mode:3.0A port1/power_role:source [sink] port1/supported_accessory_modes:none port1/uevent:DEVTYPE=typec_port port1/uevent:TYPEC_PORT=port1 port1/usb_power_delivery_revision:2.0 port1/usb_typec_revision:1.0 port1/vconn_source:no Note that for a normal plug I am usually getting a second event. This second event is occasionally missing though: kworker/u16:38-1800 [001] .... 19522.325885: ucsi_connector_change: port1 status: change=4a04, opmode=5, connected=1, sourcing=0, partner_flags=1, partner_type=1, request_data_obj=1304b12c, BC status=1 kworker/u16:38-1800 [004] .... 19522.552613: ucsi_connector_change: port1 status: change=0044, opmode=3, connected=1, sourcing=0, partner_flags=1, partner_type=1, request_data_obj=1304b12c, BC status=1 and a working unplug consistently looks like: kworker/u16:8-1771 [003] .... 19670.020085: ucsi_connector_change: port1 status: change=4804, opmode=0, connected=0, sourcing=0, partner_flags=1, partner_type=1, request_data_obj=1304b12c, BC status=0 Benjamin
Attachment:
signature.asc
Description: This is a digitally signed message part
