tg3: Fix DMA mapping leak in tigon3_dma_hwbug_workaround().

Noticed by Michael Chan. Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Sep 11, 2008 · 638266f · 638266f
1 parent 90079ce
commit 638266f
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
@@ -4631,6 +4631,9 @@ static int tigon3_dma_hwbug_workaround(struct tg3 *tp, struct sk_buff *skb,
 		 * Drop the packet if it does.
 		 */
 		if (ret || tg3_4g_overflow_test(new_addr, new_skb->len)) {
+			if (!ret)
+				skb_dma_unmap(&tp->pdev->dev, new_skb,
+					      DMA_TO_DEVICE);
 			ret = -1;
 			dev_kfree_skb(new_skb);
 			new_skb = NULL;