From: Roland Dreier <rolandd@cisco.com>
Date: Tue, 10 Oct 2006 19:50:38 +0000 (-0700)
Subject: IPoIB: Check for DMA mapping error for TX packets
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=73fbe8be73512b8a3ffa3d20c9d7f531af99679c;p=openwrt%2Fstaging%2Fblogic.git

IPoIB: Check for DMA mapping error for TX packets

Signed-off-by: Roland Dreier <rolandd@cisco.com>
---

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index f426a69d9a43..8bf5e9ec7c95 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -355,6 +355,11 @@ void ipoib_send(struct net_device *dev, struct sk_buff *skb,
 	tx_req->skb = skb;
 	addr = dma_map_single(priv->ca->dma_device, skb->data, skb->len,
 			      DMA_TO_DEVICE);
+	if (unlikely(dma_mapping_error(addr))) {
+		++priv->stats.tx_errors;
+		dev_kfree_skb_any(skb);
+		return;
+	}
 	pci_unmap_addr_set(tx_req, mapping, addr);
 
 	if (unlikely(post_send(priv, priv->tx_head & (ipoib_sendq_size - 1),