6.12-stable review patch. If anyone has any objections, please let me know.
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From: Andrei Kuchynski akuchynski@chromium.org
commit 66e1a887273c6b89f09bc11a40d0a71d5a081a8e upstream.
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: 59de2a56d127 ("usb: typec: Link enumerated USB devices with Type-C partner") Signed-off-by: Andrei Kuchynski akuchynski@chromium.org Reviewed-by: Heikki Krogerus heikki.krogerus@linux.intel.com Reviewed-by: Benson Leung bleung@chromium.org Link: https://lore.kernel.org/r/20250321143728.4092417-3-akuchynski@chromium.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/usb/typec/class.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -966,10 +966,14 @@ void typec_unregister_partner(struct typ 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);