From 0264d8853137a9a328d9f0ed29e083dd505512cb Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@dev.mellanox.co.il>
Date: Sun, 25 Mar 2007 11:17:43 +0200
Subject: [PATCH] IB/mthca: Fix thinko in init_mr_table()

Commit c20e20ab ("IB/mthca: Merge MR and FMR space on 64-bit systems")
swapped the number of MTTs and MPTs when initializing the MR table. As
a result, we get a kernel oops when the number of MTT segments
allocated exceeds 0x20000.

Noted by Troy Benjegerdes <troy@scl.ameslab.gov>, and reproduced by
Dotan Barak <dotanb@mellanox.co.il>.  This fixes
https://bugs.openfabrics.org/show_bug.cgi?id=490

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
---
 drivers/infiniband/hw/mthca/mthca_mr.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
index 8e4846b5c641..fdb576dcfaa8 100644
--- a/drivers/infiniband/hw/mthca/mthca_mr.c
+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
@@ -881,8 +881,8 @@ int mthca_init_mr_table(struct mthca_dev *dev)
 		}
 		mpts = mtts = 1 << i;
 	} else {
-		mpts = dev->limits.num_mtt_segs;
-		mtts = dev->limits.num_mpts;
+		mtts = dev->limits.num_mtt_segs;
+		mpts = dev->limits.num_mpts;
 	}
 
 	if (!mthca_is_memfree(dev) &&
-- 
2.34.1