Linus, please pull from
master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband.git for-linus
This tree is also available from kernel.org mirrors at:
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git for-linus
This tree has one bug fix (really the second half of a fix for a bug
that appeared two different places):
Michael S. Tsirkin:
IB/mthca: Fix posting lists of 256 receive requests to SRQ for Tavor
drivers/infiniband/hw/mthca/mthca_srq.c | 41 ++++++++++++++++---------------
1 files changed, 21 insertions(+), 20 deletions(-)
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index 1ea4332..b292fef 100644
--- a/drivers/infiniband/hw/mthca/mthca_srq.c
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -490,26 +490,7 @@ int mthca_tavor_post_srq_recv(struct ib_
first_ind = srq->first_free;
- for (nreq = 0; wr; ++nreq, wr = wr->next) {
- if (unlikely(nreq == MTHCA_TAVOR_MAX_WQES_PER_RECV_DB)) {
- nreq = 0;
-
- doorbell[0] = cpu_to_be32(first_ind << srq->wqe_shift);
- doorbell[1] = cpu_to_be32(srq->srqn << 8);
-
- /*
- * Make sure that descriptors are written
- * before doorbell is rung.
- */
- wmb();
-
- mthca_write64(doorbell,
- dev->kar + MTHCA_RECEIVE_DOORBELL,
- MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
-
- first_ind = srq->first_free;
- }
-
+ for (nreq = 0; wr; wr = wr->next) {
ind = srq->first_free;
if (ind < 0) {
@@ -569,6 +550,26 @@ int mthca_tavor_post_srq_recv(struct ib_
srq->wrid[ind] = wr->wr_id;
srq->first_free = next_ind;
+
+ ++nreq;
+ if (unlikely(nreq == MTHCA_TAVOR_MAX_WQES_PER_RECV_DB)) {
+ nreq = 0;
+
+ doorbell[0] = cpu_to_be32(first_ind << srq->wqe_shift);
+ doorbell[1] = cpu_to_be32(srq->srqn << 8);
+
+ /*
+ * Make sure that descriptors are written
+ * before doorbell is rung.
+ */
+ wmb();
+
+ mthca_write64(doorbell,
+ dev->kar + MTHCA_RECEIVE_DOORBELL,
+ MTHCA_GET_DOORBELL_LOCK(&dev->doorbell_lock));
+
+ first_ind = srq->first_free;
+ }
}
if (likely(nreq)) {
-
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