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| author | Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2018-03-20 07:59:12 +0100 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2018-06-01 00:30:24 +0100 |
| commit | b4eeaa94d0eb1a4b84361c941056f28c8ca314a6 (patch) | |
| tree | 789916f219a3e19f6529f3bc398403beef73d51b | |
| parent | 6812610424262b90d3e5635291b1e4933cf8bd89 (diff) | |
| download | linux-b4eeaa94d0eb1a4b84361c941056f28c8ca314a6.tar.gz linux-b4eeaa94d0eb1a4b84361c941056f28c8ca314a6.tar.bz2 linux-b4eeaa94d0eb1a4b84361c941056f28c8ca314a6.zip | |
s390/qeth: free netdevice when removing a card
commit 6be687395b3124f002a653c1a50b3260222b3cd7 upstream.
On removal, a qeth card's netdevice is currently not properly freed
because the call chain looks as follows:
qeth_core_remove_device(card)
lx_remove_device(card)
unregister_netdev(card->dev)
card->dev = NULL !!!
qeth_core_free_card(card)
if (card->dev) !!!
free_netdev(card->dev)
Fix it by free'ing the netdev straight after unregistering. This also
fixes the sysfs-driven layer switch case (qeth_dev_layer2_store()),
where the need to free the current netdevice was not considered at all.
Note that free_netdev() takes care of the netif_napi_del() for us too.
Fixes: 4a71df50047f ("qeth: new qeth device driver")
Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | drivers/s390/net/qeth_core_main.c | 2 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l2_main.c | 2 | ||||
| -rw-r--r-- | drivers/s390/net/qeth_l3_main.c | 2 |
3 files changed, 2 insertions, 4 deletions
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c index 3a0b5fca1f04..0c2f7a54ab42 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -4578,8 +4578,6 @@ static void qeth_core_free_card(struct qeth_card *card) QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); qeth_clean_channel(&card->read); qeth_clean_channel(&card->write); - if (card->dev) - free_netdev(card->dev); kfree(card->ip_tbd_list); qeth_free_qdio_buffers(card); unregister_service_level(&card->qeth_service_level); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index fc7565910a05..f4a620360600 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -897,8 +897,8 @@ 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); + free_netdev(card->dev); card->dev = NULL; } return; diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c index fa38a3647c41..a55748773707 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -3395,8 +3395,8 @@ 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); + free_netdev(card->dev); card->dev = NULL; } |