6.6-stable review patch. If anyone has any objections, please let me know.
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From: Andrei Kuchynski akuchynski@chromium.org
commit b13abcb7ddd8d38de769486db5bd917537b32ab1 upstream.
Resources should be released only after all threads that utilize them have been destroyed. This commit ensures that resources are not released prematurely by waiting for the associated workqueue to complete before deallocating them.
Cc: stable stable@kernel.org Fixes: b9aa02ca39a4 ("usb: typec: ucsi: Add polling mechanism for partner tasks like alt mode checking") Signed-off-by: Andrei Kuchynski akuchynski@chromium.org Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Link: https://lore.kernel.org/r/20250305111739.1489003-2-akuchynski@chromium.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/ucsi/ucsi.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)
--- a/drivers/usb/typec/ucsi/ucsi.c +++ b/drivers/usb/typec/ucsi/ucsi.c @@ -1465,11 +1465,11 @@ static int ucsi_init(struct ucsi *ucsi)
err_unregister: for (con = connector; con->port; con++) { + if (con->wq) + destroy_workqueue(con->wq); ucsi_unregister_partner(con); ucsi_unregister_altmodes(con, UCSI_RECIPIENT_CON); ucsi_unregister_port_psy(con); - if (con->wq) - destroy_workqueue(con->wq);
usb_power_delivery_unregister_capabilities(con->port_sink_caps); con->port_sink_caps = NULL; @@ -1651,10 +1651,6 @@ void ucsi_unregister(struct ucsi *ucsi)
for (i = 0; i < ucsi->cap.num_connectors; i++) { cancel_work_sync(&ucsi->connector[i].work); - ucsi_unregister_partner(&ucsi->connector[i]); - ucsi_unregister_altmodes(&ucsi->connector[i], - UCSI_RECIPIENT_CON); - ucsi_unregister_port_psy(&ucsi->connector[i]);
if (ucsi->connector[i].wq) { struct ucsi_work *uwork; @@ -1670,6 +1666,11 @@ void ucsi_unregister(struct ucsi *ucsi) destroy_workqueue(ucsi->connector[i].wq); }
+ ucsi_unregister_partner(&ucsi->connector[i]); + ucsi_unregister_altmodes(&ucsi->connector[i], + UCSI_RECIPIENT_CON); + ucsi_unregister_port_psy(&ucsi->connector[i]); + usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_sink_caps); ucsi->connector[i].port_sink_caps = NULL; usb_power_delivery_unregister_capabilities(ucsi->connector[i].port_source_caps);