From 937071c171ff3656e196c965c5179ba3f9f6a2fc Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Fri, 10 Mar 2017 17:34:57 +0100 Subject: [PATCH] net: stmmac: Check for DMA mapping errors When DMA mapping an SKB fragment, the mapping must be checked for errors, otherwise the DMA debug code will complain upon unmap. Signed-off-by: Thierry Reding Signed-off-by: David S. Miller --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index ce6d7e791f3f..eba9088e1f61 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -2079,6 +2079,8 @@ static netdev_tx_t stmmac_tso_xmit(struct sk_buff *skb, struct net_device *dev) des = skb_frag_dma_map(priv->device, frag, 0, skb_frag_size(frag), DMA_TO_DEVICE); + if (dma_mapping_error(priv->device, des)) + goto dma_map_err; stmmac_tso_allocator(priv, des, skb_frag_size(frag), (i == nfrags - 1));