[ Upstream commit 9872760eb7b1d4f6066ad8b560714a5d0a728fdb ]
The XDomain protocol messages may start as soon as Thunderbolt control channel is started. This means that if the other host starts sending ThunderboltIP packets early enough they will be passed to the network driver which then gets confused because its resume hook is not called yet.
Fix this by unregistering the ThunderboltIP protocol handler when suspending and registering it back on resume.
Signed-off-by: Mika Westerberg mika.westerberg@linux.intel.com Acked-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/thunderbolt.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/thunderbolt.c b/drivers/net/thunderbolt.c index c48c3a1eb1f8..fcf31335a8b6 100644 --- a/drivers/net/thunderbolt.c +++ b/drivers/net/thunderbolt.c @@ -1282,6 +1282,7 @@ static int __maybe_unused tbnet_suspend(struct device *dev) tbnet_tear_down(net, true); }
+ tb_unregister_protocol_handler(&net->handler); return 0; }
@@ -1290,6 +1291,8 @@ static int __maybe_unused tbnet_resume(struct device *dev) struct tb_service *svc = tb_to_service(dev); struct tbnet *net = tb_service_get_drvdata(svc);
+ tb_register_protocol_handler(&net->handler); + netif_carrier_off(net->dev); if (netif_running(net->dev)) { netif_device_attach(net->dev);