Commit 0264d885 authored Mar 25, 2007 by Michael S. Tsirkin Committed by Roland Dreier Mar 26, 2007

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>

parent ed6ee517

drivers/infiniband/hw/mthca/mthca_mr.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -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) &&