@@ -1315,6 +1315,7 @@ static int enic_notify_set(struct enic *enic)
{
int err;
+ spin_lock(&enic->devcmd_lock);
switch (vnic_dev_get_intr_mode(enic->vdev)) {
case VNIC_DEV_INTR_MODE_INTX:
err = vnic_dev_notify_set(enic->vdev, ENIC_INTX_NOTIFY);
@@ -1326,6 +1327,7 @@ static int enic_notify_set(struct enic *enic)
err = vnic_dev_notify_set(enic->vdev, -1 /* no intr */);
break;
}
+ spin_unlock(&enic->devcmd_lock);
return err;
}
@@ -1379,12 +1381,16 @@ static int enic_open(struct net_device *netdev)
for (i = 0; i < enic->rq_count; i++)
vnic_rq_enable(&enic->rq[i]);
+ spin_lock(&enic->devcmd_lock);
enic_add_station_addr(enic);
+ spin_unlock(&enic->devcmd_lock);
enic_set_multicast_list(netdev);
netif_wake_queue(netdev);
napi_enable(&enic->napi);
+ spin_lock(&enic->devcmd_lock);
vnic_dev_enable(enic->vdev);
+ spin_unlock(&enic->devcmd_lock);
for (i = 0; i < enic->intr_count; i++)
vnic_intr_unmask(&enic->intr[i]);
@@ -1394,7 +1400,9 @@ static int enic_open(struct net_device *netdev)
return 0;
err_out_notify_unset:
+ spin_lock(&enic->devcmd_lock);
vnic_dev_notify_unset(enic->vdev);
+ spin_unlock(&enic->devcmd_lock);
err_out_free_intr:
enic_free_intr(enic);
@@ -1410,7 +1418,9 @@ static int enic_stop(struct net_device *netdev)
del_timer_sync(&enic->notify_timer);
+ spin_lock(&enic->devcmd_lock);
vnic_dev_disable(enic->vdev);
+ spin_unlock(&enic->devcmd_lock);
napi_disable(&enic->napi);
netif_stop_queue(netdev);
@@ -1428,7 +1438,9 @@ static int enic_stop(struct net_device *netdev)
return err;
}
+ spin_lock(&enic->devcmd_lock);
vnic_dev_notify_unset(enic->vdev);
+ spin_unlock(&enic->devcmd_lock);
enic_free_intr(enic);
(void)vnic_cq_service(&enic->cq[ENIC_CQ_RQ],
enic: bug fix: protect fw call i/f with spinlock Some driver -> nic firmware calls weren't guarded with a spinlock, exposing the call i/f to a race between two threads Signed-off-by: Scott Feldman <scofeldm@cisco.com> --- drivers/net/enic/enic_main.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html