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infiniband/mlx4: check for mapping error

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Since ib_dma_map_single can fail use ib_dma_mapping_error to check
for errors.

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Sebastian Ott
2015-03-16 18:49:59 +01:00
committed by Doug Ledford
parent d2928a8c0d
commit cc47d369b5
2 changed files with 13 additions and 0 deletions
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4
drivers/infiniband/hw/mlx4/qp.c
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@@ -566,6 +566,10 @@ static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp)
ib_dma_map_single(dev, qp->sqp_proxy_rcv[i].addr,
sizeof (struct mlx4_ib_proxy_sqp_hdr),
DMA_FROM_DEVICE);
if (ib_dma_mapping_error(dev, qp->sqp_proxy_rcv[i].map)) {
kfree(qp->sqp_proxy_rcv[i].addr);
goto err;
}
}
return 0;