iwlagn: fix cmd queue unmap
When we stop the device while a command is in flight that uses multiple TBs, we can leak the DMA buffers for the second and higher TBs. Fix this by using iwlagn_unmap_tfd() as we do when we normally recover the entry. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
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1 changed files with 1 additions and 4 deletions
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@ -309,10 +309,7 @@ void iwl_cmd_queue_unmap(struct iwl_priv *priv)
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i = get_cmd_index(q, q->read_ptr);
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if (txq->meta[i].flags & CMD_MAPPED) {
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dma_unmap_single(priv->bus.dev,
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dma_unmap_addr(&txq->meta[i], mapping),
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dma_unmap_len(&txq->meta[i], len),
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DMA_BIDIRECTIONAL);
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iwlagn_unmap_tfd(priv, &txq->meta[i], &txq->tfds[i]);
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txq->meta[i].flags = 0;
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}
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