From cc47d369b51286129aad1735096b1884b8068ad1 Mon Sep 17 00:00:00 2001 From: Sebastian Ott Date: Mon, 16 Mar 2015 18:49:59 +0100 Subject: [PATCH] infiniband/mlx4: check for mapping error Since ib_dma_map_single can fail use ib_dma_mapping_error to check for errors. Signed-off-by: Sebastian Ott Acked-by: Jack Morgenstein Signed-off-by: Doug Ledford --- drivers/infiniband/hw/mlx4/mad.c | 9 +++++++++ drivers/infiniband/hw/mlx4/qp.c | 4 ++++ 2 files changed, 13 insertions(+) diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c index 59040265e361..9cd2b002d7ae 100644 --- a/drivers/infiniband/hw/mlx4/mad.c +++ b/drivers/infiniband/hw/mlx4/mad.c @@ -1430,6 +1430,10 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, tun_qp->ring[i].addr, rx_buf_size, DMA_FROM_DEVICE); + if (ib_dma_mapping_error(ctx->ib_dev, tun_qp->ring[i].map)) { + kfree(tun_qp->ring[i].addr); + goto err; + } } for (i = 0; i < MLX4_NUM_TUNNEL_BUFS; i++) { @@ -1442,6 +1446,11 @@ static int mlx4_ib_alloc_pv_bufs(struct mlx4_ib_demux_pv_ctx *ctx, tun_qp->tx_ring[i].buf.addr, tx_buf_size, DMA_TO_DEVICE); + if (ib_dma_mapping_error(ctx->ib_dev, + tun_qp->tx_ring[i].buf.map)) { + kfree(tun_qp->tx_ring[i].buf.addr); + goto tx_err; + } tun_qp->tx_ring[i].ah = NULL; } spin_lock_init(&tun_qp->tx_lock); diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index ed2bd6701f9b..0766550d6ed9 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -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;