Commit df3f23d8 authored by Ursula Braun's avatar Ursula Braun Committed by Sasha Levin

qeth: delete napi struct when removing a qeth device

[ Upstream commit 7831b4ff ]

A qeth_card contains a napi_struct linked to the net_device during
device probing. This struct must be deleted when removing the qeth
device, otherwise Panic on oops can occur when qeth devices are
repeatedly removed and added.

Fixes: a1c3ed4c ("qeth: NAPI support for l2 and l3 discipline")
Cc: stable@vger.kernel.org # v2.6.37+
Signed-off-by: default avatarUrsula Braun <ubraun@linux.vnet.ibm.com>
Tested-by: default avatarAlexander Klein <ALKL@de.ibm.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
parent 2c89e2e6
......@@ -902,6 +902,7 @@ static void qeth_l2_remove_device(struct ccwgroup_device *cgdev)
qeth_l2_set_offline(cgdev);
if (card->dev) {
netif_napi_del(&card->napi);
unregister_netdev(card->dev);
card->dev = NULL;
}
......
......@@ -3362,6 +3362,7 @@ static void qeth_l3_remove_device(struct ccwgroup_device *cgdev)
qeth_l3_set_offline(cgdev);
if (card->dev) {
netif_napi_del(&card->napi);
unregister_netdev(card->dev);
card->dev = NULL;
}
......
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