diff options
| author | Haggai Eran <haggaie@mellanox.com> | 2014-05-22 14:50:08 +0300 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2014-05-27 11:53:05 -0700 |
| commit | 096f7e72c604e983e14b84b84fc37593fc433585 (patch) | |
| tree | 540e07929db39577906f4c529f32a57d5b9e7039 /drivers/infiniband/hw/mlx5/mr.c | |
| parent | c7f44fbda68a6b2d6ceb10e45c711750e779bace (diff) | |
IB/mlx5: Fix error handling in reg_umr
If ib_post_send fails when posting the UMR work request in reg_umr,
the code doesn't release the temporary pas buffer allocated, and
doesn't dma_unmap it.
Signed-off-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx5/mr.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mr.c | 31 |
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c index 81392b26d078..ad5898592016 100644 --- a/drivers/infiniband/hw/mlx5/mr.c +++ b/drivers/infiniband/hw/mlx5/mr.c @@ -730,7 +730,7 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, struct mlx5_ib_mr *mr; struct ib_sge sg; int size = sizeof(u64) * npages; - int err; + int err = 0; int i; for (i = 0; i < 1; i++) { @@ -751,7 +751,7 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, mr->pas = kmalloc(size + MLX5_UMR_ALIGN - 1, GFP_KERNEL); if (!mr->pas) { err = -ENOMEM; - goto error; + goto free_mr; } mlx5_ib_populate_pas(dev, umem, page_shift, @@ -760,9 +760,8 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, mr->dma = dma_map_single(ddev, mr_align(mr->pas, MLX5_UMR_ALIGN), size, DMA_TO_DEVICE); if (dma_mapping_error(ddev, mr->dma)) { - kfree(mr->pas); err = -ENOMEM; - goto error; + goto free_pas; } memset(&wr, 0, sizeof(wr)); @@ -778,26 +777,28 @@ static struct mlx5_ib_mr *reg_umr(struct ib_pd *pd, struct ib_umem *umem, err = ib_post_send(umrc->qp, &wr, &bad); if (err) { mlx5_ib_warn(dev, "post send failed, err %d\n", err); - up(&umrc->sem); - goto error; + goto unmap_dma; } wait_for_completion(&mr->done); - up(&umrc->sem); + if (mr->status != IB_WC_SUCCESS) { + mlx5_ib_warn(dev, "reg umr failed\n"); + err = -EFAULT; + } +unmap_dma: + up(&umrc->sem); dma_unmap_single(ddev, mr->dma, size, DMA_TO_DEVICE); + +free_pas: kfree(mr->pas); - if (mr->status != IB_WC_SUCCESS) { - mlx5_ib_warn(dev, "reg umr failed\n"); - err = -EFAULT; - goto error; +free_mr: + if (err) { + free_cached_mr(dev, mr); + return ERR_PTR(err); } return mr; - -error: - free_cached_mr(dev, mr); - return ERR_PTR(err); } static struct mlx5_ib_mr *reg_create(struct ib_pd *pd, u64 virt_addr, |