Commit 66e1a887 authored by Andrei Kuchynski's avatar Andrei Kuchynski Committed by Greg Kroah-Hartman
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usb: typec: class: Invalidate USB device pointers on partner unregistration 



To avoid using invalid USB device pointers after a Type-C partner
disconnects, this patch clears the pointers upon partner unregistration.
This ensures a clean state for future connections.

Cc: stable@vger.kernel.org
Fixes: 59de2a56 ("usb: typec: Link enumerated USB devices with Type-C partner")
Signed-off-by: default avatarAndrei Kuchynski <akuchynski@chromium.org>
Reviewed-by: default avatarHeikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: default avatarBenson Leung <bleung@chromium.org>
Link: https://lore.kernel.org/r/20250321143728.4092417-3-akuchynski@chromium.org


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ec27386d

drivers/usb/typec/class.c

+6 −2
Original line number Diff line number Diff line
@@ -1086,10 +1086,14 @@ void typec_unregister_partner(struct typec_partner *partner) 
	port = to_typec_port(partner->dev.parent);



	mutex_lock(&port->partner_link_lock);

	if (port->usb2_dev)

	if (port->usb2_dev) {

		typec_partner_unlink_device(partner, port->usb2_dev);

	if (port->usb3_dev)

		port->usb2_dev = NULL;

	}

	if (port->usb3_dev) {

		typec_partner_unlink_device(partner, port->usb3_dev);

		port->usb3_dev = NULL;

	}



	device_unregister(&partner->dev);

	mutex_unlock(&port->partner_link_lock);