[PATCH] rdma/nes: change WQ overflow return code

[Or Gerlitz]

change the nes driver to return -ENOMEM on SQ/RQ overflow in the
manner done by other rdma hw drivers (e.g cxgb3, ehca, mlx4, mthca)

Signed-off-by: Or Gerlitz <ogerl...@voltaire.com>

Index: linux-2.6.33-rc4/drivers/infiniband/hw/nes/nes_verbs.c
===================================================================
--- linux-2.6.33-rc4.orig/drivers/infiniband/hw/nes/nes_verbs.c
+++ linux-2.6.33-rc4/drivers/infiniband/hw/nes/nes_verbs.c
@@ -228,7 +228,7 @@ static int nes_bind_mw(struct ib_qp *ibq
        /* Check for SQ overflow */
        if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == (qsize - 
1)) {
                spin_unlock_irqrestore(&nesqp->lock, flags);
-               return -EINVAL;
+               return -ENOMEM;
        }

        wqe = &nesqp->hwqp.sq_vbase[head];
@@ -3294,7 +3294,7 @@ static int nes_post_send(struct ib_qp *i

                /* Check for SQ overflow */
                if (((head + (2 * qsize) - nesqp->hwqp.sq_tail) % qsize) == 
(qsize - 1)) {
-                       err = -EINVAL;
+                       err = -ENOMEM;
                        break;
                }

@@ -3577,7 +3577,7 @@ static int nes_post_recv(struct ib_qp *i
                }
                /* Check for RQ overflow */
                if (((head + (2 * qsize) - nesqp->hwqp.rq_tail) % qsize) == 
(qsize - 1)) {
-                       err = -EINVAL;
+                       err = -ENOMEM;
                        break;
                }

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