diff options
Diffstat (limited to 'drivers/infiniband/sw/rdmavt/rc.c')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/rc.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/infiniband/sw/rdmavt/rc.c b/drivers/infiniband/sw/rdmavt/rc.c index 09f0cf538be6..44cc7ee1b321 100644 --- a/drivers/infiniband/sw/rdmavt/rc.c +++ b/drivers/infiniband/sw/rdmavt/rc.c @@ -104,15 +104,19 @@ __be32 rvt_compute_aeth(struct rvt_qp *qp) } else { u32 min, max, x; u32 credits; - struct rvt_rwq *wq = qp->r_rq.wq; u32 head; u32 tail; /* sanity check pointers before trusting them */ - head = wq->head; + if (qp->ip) { + head = RDMA_READ_UAPI_ATOMIC(qp->r_rq.wq->head); + tail = RDMA_READ_UAPI_ATOMIC(qp->r_rq.wq->tail); + } else { + head = READ_ONCE(qp->r_rq.kwq->head); + tail = READ_ONCE(qp->r_rq.kwq->tail); + } if (head >= qp->r_rq.size) head = 0; - tail = wq->tail; if (tail >= qp->r_rq.size) tail = 0; /* |