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| author |   Julian Wiedmann <jwi@linux.vnet.ibm.com> | 2018-03-20 07:59:12 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-03-22 11:52:30 -0400 |
| commit | 6be687395b3124f002a653c1a50b3260222b3cd7 (patch) | |
| tree | bf6745b4a0e6676f097e26200685e0670b38f089 | |
| parent | Merge branch 'net-phy-Add-general-dummy-stubs-for-MMD-register-access' (diff) | |
| download | linux-dev-6be687395b3124f002a653c1a50b3260222b3cd7.tar.xz linux-dev-6be687395b3124f002a653c1a50b3260222b3cd7.zip | |
s390/qeth: free netdevice when removing a card
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>
| -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 c8b308cfabf1..4a820afececd 100644 --- a/drivers/s390/net/qeth_core_main.c +++ b/drivers/s390/net/qeth_core_main.c @@ -5087,8 +5087,6 @@ 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); qeth_free_qdio_buffers(card); unregister_service_level(&card->qeth_service_level); kfree(card); diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c index 7f236440483f..5ef4c978ad19 100644 --- a/drivers/s390/net/qeth_l2_main.c +++ b/drivers/s390/net/qeth_l2_main.c @@ -915,8 +915,8 @@ 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 962a04b68dd2..b6b12220da71 100644 --- a/drivers/s390/net/qeth_l3_main.c +++ b/drivers/s390/net/qeth_l3_main.c @@ -2865,8 +2865,8 @@ 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; } |