From 273d4428f8c4cc94c9598f8bcc006ec2e8c654ea Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Sun, 11 Sep 2016 05:04:00 -0300
Subject: Linux-libre 4.7.2-gnu

---
 drivers/infiniband/core/verbs.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'drivers/infiniband/core/verbs.c')

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 6298f54b4..e39a0b597 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -814,6 +814,15 @@ struct ib_qp *ib_create_qp(struct ib_pd *pd,
 		}
 	}
 
+	/*
+	 * Note: all hw drivers guarantee that max_send_sge is lower than
+	 * the device RDMA WRITE SGE limit but not all hw drivers ensure that
+	 * max_send_sge <= max_sge_rd.
+	 */
+	qp->max_write_sge = qp_init_attr->cap.max_send_sge;
+	qp->max_read_sge = min_t(u32, qp_init_attr->cap.max_send_sge,
+				 device->attrs.max_sge_rd);
+
 	return qp;
 }
 EXPORT_SYMBOL(ib_create_qp);
-- 
cgit v1.2.3-54-g00ecf