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dpaa2-eth: check the result of skb_to_sgvec()

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Before passing the result of skb_to_sgvec() to dma_map_sg() check if any
error was returned.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciornei 2020-06-24 14:34:18 +03:00 committed by David S. Miller
parent 0da1e28f97
commit 37fbbdda63
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
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@ -611,6 +611,10 @@ static int build_sg_fd(struct dpaa2_eth_priv *priv,
sg_init_table(scl, nr_frags + 1);
num_sg = skb_to_sgvec(skb, scl, 0, skb->len);
if (unlikely(num_sg < 0)) {
err = -ENOMEM;
goto dma_map_sg_failed;
}
num_dma_bufs = dma_map_sg(dev, scl, num_sg, DMA_BIDIRECTIONAL);
if (unlikely(!num_dma_bufs)) {
err = -ENOMEM;