From: Andrei Kuchynski Date: Fri, 21 Mar 2025 14:37:27 +0000 (+0000) Subject: usb: typec: class: Invalidate USB device pointers on partner unregistration X-Git-Tag: v6.15-rc4~21^2~18 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66e1a887273c6b89f09bc11a40d0a71d5a081a8e;p=thirdparty%2Fkernel%2Fstable.git 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: 59de2a56d127 ("usb: typec: Link enumerated USB devices with Type-C partner") Signed-off-by: Andrei Kuchynski Reviewed-by: Heikki Krogerus Reviewed-by: Benson Leung Link: https://lore.kernel.org/r/20250321143728.4092417-3-akuchynski@chromium.org Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index eadb150223f8f..3df3e37369162 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -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);