Patch "net: thunderbolt: Tear down connection properly on suspend" has been added to the 4.15-stable tree

Patch "net: thunderbolt: Tear down connection properly on suspend" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    net: thunderbolt: Tear down connection properly on suspend

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-thunderbolt-tear-down-connection-properly-on-suspend.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8e021a14d908475fea89ef85b5421865f7ad650d Mon Sep 17 00:00:00 2001
From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Mon, 12 Feb 2018 17:10:19 +0300
Subject: net: thunderbolt: Tear down connection properly on suspend

From: Mika Westerberg <mika.westerberg@linux.intel.com>

commit 8e021a14d908475fea89ef85b5421865f7ad650d upstream.

When suspending to mem or disk the Thunderbolt controller typically goes
down as well tearing down the connection automatically. However, when
suspend to idle is used this does not happen so we need to make sure the
connection is properly disconnected before it can be re-established
during resume.

Fixes: e69b6c02b4c3 ("net: Add support for networking over Thunderbolt cable")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/net/thunderbolt.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

--- a/drivers/net/thunderbolt.c
+++ b/drivers/net/thunderbolt.c
@@ -1270,10 +1270,7 @@ static int __maybe_unused tbnet_suspend(
 	stop_login(net);
 	if (netif_running(net->dev)) {
 		netif_device_detach(net->dev);
-		tb_ring_stop(net->rx_ring.ring);
-		tb_ring_stop(net->tx_ring.ring);
-		tbnet_free_buffers(&net->rx_ring);
-		tbnet_free_buffers(&net->tx_ring);
+		tbnet_tear_down(net, true);
 	}
 
 	return 0;


Patches currently in stable-queue which might be from mika.westerberg@linux.intel.com are

queue-4.15/net-thunderbolt-run-disconnect-flow-asynchronously-when-logout-is-received.patch
queue-4.15/net-thunderbolt-tear-down-connection-properly-on-suspend.patch