qeth: no recovery after layer mismatch (z/VM NICs)
Depending on their definition in z/VM, virtual devices for z/VM
VSWITCH or GuestLAN must be configured either in layer2 or in
layer3 mode. If qeth detects a layer mismatch, device activation
fails. Trying to recover from this error cannot help; thus
scheduling a recovery should be avoided.
In addition, since recovery is forbidden during online setting of
a qeth device, existence of its network device is guaranteed for all
dev_close() calls in qeth. The corresponding checks can be removed.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <frank.blaschka@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index cd746da..b3b6e87 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2219,11 +2219,9 @@
if (recovery_mode)
qeth_l3_stop(card->dev);
else {
- if (card->dev) {
- rtnl_lock();
- dev_close(card->dev);
- rtnl_unlock();
- }
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
}
if (!card->use_hard_stop) {
rc = qeth_send_stoplan(card);
@@ -3536,11 +3534,9 @@
if (card->state == CARD_STATE_RECOVER) {
rc = __qeth_l3_set_online(card->gdev, 1);
if (rc) {
- if (card->dev) {
- rtnl_lock();
- dev_close(card->dev);
- rtnl_unlock();
- }
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
}
} else
rc = __qeth_l3_set_online(card->gdev, 0);