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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>
This commit is contained in:
Johannes Berg 2011-06-22 04:25:57 -07:00 committed by Wey-Yi Guy
parent 1e5cf9b0be
commit f8d651a56e
1 changed files with 1 additions and 4 deletions
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5
drivers/net/wireless/iwlwifi/iwl-tx.c
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@ -309,10 +309,7 @@ void iwl_cmd_queue_unmap(struct iwl_priv *priv)
i = get_cmd_index(q, q->read_ptr);
if (txq->meta[i].flags & CMD_MAPPED) {
dma_unmap_single(priv->bus.dev,
dma_unmap_addr(&txq->meta[i], mapping),
dma_unmap_len(&txq->meta[i], len),
DMA_BIDIRECTIONAL);
iwlagn_unmap_tfd(priv, &txq->meta[i], &txq->tfds[i]);
txq->meta[i].flags = 0;
}