linux-kernel - [PATCH 1/1] IB/ehca: Disallow creating UC QP with SRQ

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Message-Id: <200810011306.31544.hnguyen@linux.vnet.ibm.com>
Date:	Wed, 1 Oct 2008 13:06:31 +0200
From:	Hoang-Nam Nguyen <hnguyen@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, general@...ts.openfabrics.org
Cc:	micfaath@...ibm.com, raisch@...ibm.com, stefan.roscher@...ibm.com
Subject: [PATCH 1/1] IB/ehca: Disallow creating UC QP with SRQ

IB/ehca: Disallow creating QP for UC with SRQ

This patch prevents a UC QP to be created with SRQ, since current
firmware does not support this feature.

Signed-off-by: Michael Faath <micfaath@...ibm.com>
---
 drivers/infiniband/hw/ehca/ehca_qp.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index b6bcee0..46897cd 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -460,6 +460,12 @@ static struct ehca_qp *internal_create_qp(
 		struct ehca_qp *my_srq =
 			container_of(init_attr->srq, struct ehca_qp, ib_srq);
 
+		if (qp_type == IB_QPT_UC) {
+			ehca_err(pd->device, "UC with SRQ not supported");
+			atomic_dec(&shca->num_qps);
+			return ERR_PTR(-EINVAL);
+		}
+
 		has_srq = 1;
 		parms.ext_type = EQPT_SRQBASE;
 		parms.srq_qpn = my_srq->real_qp_num;
-- 
1.5.5


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