bes2600: take pending_record_lock with _bh() — fix SOFTIRQ-safe → -unsafe inversion (closes besser#18) #11
+3
-3
@@ -829,19 +829,19 @@ int bes2600_queue_get_skb(struct bes2600_queue *queue, u32 packetID,
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bes2600_queue_parse_id(packetID, &queue_generation, &queue_id,
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&item_generation, &item_id, &if_id, &link_id);
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spin_lock(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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spin_lock_bh(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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if (!list_empty(&queue->stats->hw_priv->tx_loop.pending_record_list)) {
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list_for_each_entry_safe(record_item, temp_record_item, &queue->stats->hw_priv->tx_loop.pending_record_list, head) {
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if (record_item->packetID == packetID) {
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list_del(&record_item->head);
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dev_kfree_skb(record_item->skb);
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kfree(record_item);
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spin_unlock(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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spin_unlock_bh(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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return -EINVAL;
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}
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}
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}
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spin_unlock(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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spin_unlock_bh(&queue->stats->hw_priv->tx_loop.pending_record_lock);
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item = &queue->pool[item_id];
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+2
-2
@@ -109,9 +109,9 @@ void bes2600_tx_loop_set_enable(struct bes2600_common *hw_priv, bool need_warn)
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bes2600_queue_iterate_pending_packet(&hw_priv->tx_queue[i],
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bes2600_tx_loop_item_pending_item);
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}
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spin_lock(&hw_priv->tx_loop.pending_record_lock);
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spin_lock_bh(&hw_priv->tx_loop.pending_record_lock);
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bes2600_queue_iterate_record_pending_packet(hw_priv, bes2600_tx_loop_item_pending_item);
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spin_unlock(&hw_priv->tx_loop.pending_record_lock);
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spin_unlock_bh(&hw_priv->tx_loop.pending_record_lock);
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if (atomic_read(&hw_priv->bh_rx) > 0)
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wake_up(&hw_priv->bh_wq);
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