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| author |   Roland Dreier <rolandd@cisco.com> | 2007-06-12 10:50:42 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2007-06-12 10:50:42 -0700 |
| commit | 614c3c85b5b4c3776439d464939c123cce679dee (patch) | |
| tree | 9e25ae6a6752eb32c31dfe9d0b55c79b90385fc6 /drivers/infiniband/hw/mlx4 | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband (diff) | |
| download | linux-dev-614c3c85b5b4c3776439d464939c123cce679dee.tar.xz linux-dev-614c3c85b5b4c3776439d464939c123cce679dee.zip | |
IB/mlx4: Fix handling of wq->tail for send completions
Cast the increment added to wq->tail when send completions are
processed to u16 to avoid using wrong values caused by standard
integer promotions.
The same bug was fixed in libmlx4 by Eli Cohen <eli@mellanox.co.il>.
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/cq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index b2a290c6703a..048c5274ab1c 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -354,7 +354,7 @@ static int mlx4_ib_poll_one(struct mlx4_ib_cq *cq, if (is_send) { wq = &(*cur_qp)->sq; wqe_ctr = be16_to_cpu(cqe->wqe_index); - wq->tail += wqe_ctr - (u16) wq->tail; + wq->tail += (u16) (wqe_ctr - (u16) wq->tail); wc->wr_id = wq->wrid[wq->tail & (wq->max - 1)]; ++wq->tail; } else if ((*cur_qp)->ibqp.srq) { |