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authorLeon Romanovsky <leonro@mellanox.com>2016-08-28 10:58:33 +0300
committerDoug Ledford <dledford@redhat.com>2016-09-02 14:11:38 -0400
commit20697434b6ea9c6d895ebc5217a46f18850a109f (patch)
tree684483e6f2163f4cd5230fb6639ae9ddd392ceba /drivers
parent25b64fc5f2c0779b53ec155d69cc06b7cdc6e99f (diff)
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IB/mlx4: Don't return errors from poll_cq
Remove returning errors from mlx4 poll_cq function. Polling CQ operation in kernel never fails by Mellanox HCA architecture and respective driver design. Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/hw/mlx4/cq.c26
1 files changed, 2 insertions, 24 deletions
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c
index 15b628996633..5df63dacaaa3 100644
--- a/drivers/infiniband/hw/mlx4/cq.c
+++ b/drivers/infiniband/hw/mlx4/cq.c
@@ -687,12 +687,6 @@ repoll:
is_error = (cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) ==
MLX4_CQE_OPCODE_ERROR;
- if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP &&
- is_send)) {
- pr_warn("Completion for NOP opcode detected!\n");
- return -EINVAL;
- }
-
/* Resize CQ in progress */
if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_CQE_OPCODE_RESIZE)) {
if (cq->resize_buf) {
@@ -718,12 +712,6 @@ repoll:
*/
mqp = __mlx4_qp_lookup(to_mdev(cq->ibcq.device)->dev,
be32_to_cpu(cqe->vlan_my_qpn));
- if (unlikely(!mqp)) {
- pr_warn("CQ %06x with entry for unknown QPN %06x\n",
- cq->mcq.cqn, be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK);
- return -EINVAL;
- }
-
*cur_qp = to_mibqp(mqp);
}
@@ -736,11 +724,6 @@ repoll:
/* SRQ is also in the radix tree */
msrq = mlx4_srq_lookup(to_mdev(cq->ibcq.device)->dev,
srq_num);
- if (unlikely(!msrq)) {
- pr_warn("CQ %06x with entry for unknown SRQN %06x\n",
- cq->mcq.cqn, srq_num);
- return -EINVAL;
- }
}
if (is_send) {
@@ -891,7 +874,6 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
struct mlx4_ib_qp *cur_qp = NULL;
unsigned long flags;
int npolled;
- int err = 0;
struct mlx4_ib_dev *mdev = to_mdev(cq->ibcq.device);
spin_lock_irqsave(&cq->lock, flags);
@@ -901,8 +883,7 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
}
for (npolled = 0; npolled < num_entries; ++npolled) {
- err = mlx4_ib_poll_one(cq, &cur_qp, wc + npolled);
- if (err)
+ if (mlx4_ib_poll_one(cq, &cur_qp, wc + npolled))
break;
}
@@ -911,10 +892,7 @@ int mlx4_ib_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
out:
spin_unlock_irqrestore(&cq->lock, flags);
- if (err == 0 || err == -EAGAIN)
- return npolled;
- else
- return err;
+ return npolled;
}
int mlx4_ib_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags)