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IB/mlx4: Return EAGAIN for any error in mlx4_ib_poll_one 

Error code EAGAIN should be used when errors are temporary and next call
might succeeds.
When error code other than EAGAIN is returned, the caller (mlx4_ib_poll)
will assume all CQE in the same bunch are error too and will drop them all.

Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Yuval Shaia 2016-07-27 01:24:53 -07:00 committed by Doug Ledford
parent e6a00f6684
commit 5412352fcd
1 changed files with 3 additions and 3 deletions
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6
drivers/infiniband/hw/mlx4/cq.c
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@ -690,7 +690,7 @@ repoll:
if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP && if (unlikely((cqe->owner_sr_opcode & MLX4_CQE_OPCODE_MASK) == MLX4_OPCODE_NOP &&
is_send)) { is_send)) {
pr_warn("Completion for NOP opcode detected!\n"); pr_warn("Completion for NOP opcode detected!\n");
return -EINVAL; return -EAGAIN;
} }
/* Resize CQ in progress */ /* Resize CQ in progress */
@ -721,7 +721,7 @@ repoll:
if (unlikely(!mqp)) { if (unlikely(!mqp)) {
pr_warn("CQ %06x with entry for unknown QPN %06x\n", 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); cq->mcq.cqn, be32_to_cpu(cqe->vlan_my_qpn) & MLX4_CQE_QPN_MASK);
return -EINVAL; return -EAGAIN;
} }
*cur_qp = to_mibqp(mqp); *cur_qp = to_mibqp(mqp);
@ -739,7 +739,7 @@ repoll:
if (unlikely(!msrq)) { if (unlikely(!msrq)) {
pr_warn("CQ %06x with entry for unknown SRQN %06x\n", pr_warn("CQ %06x with entry for unknown SRQN %06x\n",
cq->mcq.cqn, srq_num); cq->mcq.cqn, srq_num);
return -EINVAL; return -EAGAIN;
} }
} }