From: Ursula Braun <ursula.braun@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Frank Blaschka <frank.blaschka@xxxxxxxxxx>
---
drivers/s390/net/qeth_core_main.c | 3 ++-
drivers/s390/net/qeth_l2_main.c | 16 ++++++----------
drivers/s390/net/qeth_l3_main.c | 16 ++++++----------
3 files changed, 14 insertions(+), 21 deletions(-)
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -537,7 +537,8 @@ static void qeth_send_control_data_cb(st
dev_err(&card->gdev->dev,
"The qeth device is not configured "
"for the OSI layer required by z/VM\n");
- qeth_schedule_recovery(card);
+ else
+ qeth_schedule_recovery(card);
goto out;
}
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1071,11 +1071,9 @@ static int qeth_l2_recover(void *ptr)
dev_info(&card->gdev->dev,
"Device successfully recovered!\n");
else {
- if (card->dev) {
- rtnl_lock();
- dev_close(card->dev);
- rtnl_unlock();
- }
+ rtnl_lock();
+ dev_close(card->dev);
+ rtnl_unlock();
dev_warn(&card->gdev->dev, "The qeth device driver "
"failed to recover an error on the device\n");
}
@@ -1129,11 +1127,9 @@ static int qeth_l2_pm_resume(struct ccwg
if (card->state == CARD_STATE_RECOVER) {
rc = __qeth_l2_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_l2_set_online(card->gdev, 0);
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -2219,11 +2219,9 @@ static int qeth_l3_stop_card(struct qeth
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 @@ static int qeth_l3_pm_resume(struct ccwg
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);
--
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