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net/mlx5_core,mlx5_ib: Do not use vmap() on coherent memory

Bläddra i källkod 
As David Daney pointed in mlx4_core driver [1], mlx5_core is also
misusing the DMA-API.

This patch is removing the code that vmap() memory allocated by
dma_alloc_coherent().

After this patch, users of this drivers might fail allocating resources
on memory fragmeneted systems.  This will be fixed later on.

[1] - https://patchwork.ozlabs.org/patch/458531/

CC: David Daney <david.daney@cavium.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai
2015-05-28 22:28:38 +03:00
committad av David S. Miller
förälder 8ed9b5e1c8
incheckning 64ffaa2159
6 ändrade filer med 20 tillägg och 91 borttagningar
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3
drivers/infiniband/hw/mlx5/cq.c
Visa fil

@@ -590,8 +590,7 @@ static int alloc_cq_buf(struct mlx5_ib_dev *dev, struct mlx5_ib_cq_buf *buf,
{
int err;
err = mlx5_buf_alloc(dev->mdev, nent * cqe_size,
PAGE_SIZE * 2, &buf->buf);
err = mlx5_buf_alloc(dev->mdev, nent * cqe_size, &buf->buf);
if (err)
return err;

2
drivers/infiniband/hw/mlx5/qp.c
Visa fil

@@ -768,7 +768,7 @@ static int create_kernel_qp(struct mlx5_ib_dev *dev,
qp->sq.offset = qp->rq.wqe_cnt << qp->rq.wqe_shift;
qp->buf_size = err + (qp->rq.wqe_cnt << qp->rq.wqe_shift);
err = mlx5_buf_alloc(dev->mdev, qp->buf_size, PAGE_SIZE * 2, &qp->buf);
err = mlx5_buf_alloc(dev->mdev, qp->buf_size, &qp->buf);
if (err) {
mlx5_ib_dbg(dev, "err %d\n", err);
goto err_uuar;

2
drivers/infiniband/hw/mlx5/srq.c
Visa fil

@@ -165,7 +165,7 @@ static int create_srq_kernel(struct mlx5_ib_dev *dev, struct mlx5_ib_srq *srq,
return err;
}
if (mlx5_buf_alloc(dev->mdev, buf_size, PAGE_SIZE * 2, &srq->buf)) {
if (mlx5_buf_alloc(dev->mdev, buf_size, &srq->buf)) {
mlx5_ib_dbg(dev, "buf alloc failed\n");
err = -ENOMEM;
goto err_db;