virtio-net: drop config_mutex
config_mutex served two purposes: prevent multiple concurrent config
change handlers, and synchronize access to config_enable flag.
Since commit dbf2576e37
workqueue: make all workqueues non-reentrant
all workqueues are non-reentrant, and config_enable
is now gone.
Get rid of the unnecessary lock.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
parent
102a2786c9
commit
080c637373
1 changed files with 1 additions and 6 deletions
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@ -132,9 +132,6 @@ struct virtnet_info {
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/* Work struct for config space updates */
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struct work_struct config_work;
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/* Lock for config space updates */
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struct mutex config_lock;
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/* Does the affinity hint is set for virtqueues? */
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bool affinity_hint_set;
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@ -1404,7 +1401,6 @@ static void virtnet_config_changed_work(struct work_struct *work)
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container_of(work, struct virtnet_info, config_work);
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u16 v;
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mutex_lock(&vi->config_lock);
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if (virtio_cread_feature(vi->vdev, VIRTIO_NET_F_STATUS,
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struct virtio_net_config, status, &v) < 0)
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goto done;
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@ -1430,7 +1426,7 @@ static void virtnet_config_changed_work(struct work_struct *work)
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netif_tx_stop_all_queues(vi->dev);
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}
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done:
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mutex_unlock(&vi->config_lock);
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return;
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}
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static void virtnet_config_changed(struct virtio_device *vdev)
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@ -1751,7 +1747,6 @@ static int virtnet_probe(struct virtio_device *vdev)
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u64_stats_init(&virtnet_stats->rx_syncp);
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}
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mutex_init(&vi->config_lock);
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INIT_WORK(&vi->config_work, virtnet_config_changed_work);
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/* If we can receive ANY GSO packets, we must allocate large ones. */
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