linux-kernel - [117/272] RDMA/cxgb4: Limit MAXBURST EQ context field to 256B

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Message-Id: <20110216001436.767793923@clark.kroah.org>
Date:	Tue, 15 Feb 2011 16:12:54 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Steve Wise <swise@...ngridcomputing.com>,
	Roland Dreier <roland@...estorage.com>
Subject: [117/272] RDMA/cxgb4: Limit MAXBURST EQ context field to 256B

2.6.37-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Steve Wise <swise@...ngridcomputing.com>

commit 6a09a9d6946dd516d243d072bee83fae3c683471 upstream.

MAXBURST cannot exceed 256B for on-chip queues.  With a 512B MAXBURST,
we can lock up the chip.

Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
Signed-off-by: Roland Dreier <roland@...estorage.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/infiniband/hw/cxgb4/qp.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/infiniband/hw/cxgb4/qp.c
+++ b/drivers/infiniband/hw/cxgb4/qp.c
@@ -220,7 +220,7 @@ static int create_qp(struct c4iw_rdev *r
 		V_FW_RI_RES_WR_DCAEN(0) |
 		V_FW_RI_RES_WR_DCACPU(0) |
 		V_FW_RI_RES_WR_FBMIN(2) |
-		V_FW_RI_RES_WR_FBMAX(3) |
+		V_FW_RI_RES_WR_FBMAX(2) |
 		V_FW_RI_RES_WR_CIDXFTHRESHO(0) |
 		V_FW_RI_RES_WR_CIDXFTHRESH(0) |
 		V_FW_RI_RES_WR_EQSIZE(eqsize));
@@ -243,7 +243,7 @@ static int create_qp(struct c4iw_rdev *r
 		V_FW_RI_RES_WR_DCAEN(0) |
 		V_FW_RI_RES_WR_DCACPU(0) |
 		V_FW_RI_RES_WR_FBMIN(2) |
-		V_FW_RI_RES_WR_FBMAX(3) |
+		V_FW_RI_RES_WR_FBMAX(2) |
 		V_FW_RI_RES_WR_CIDXFTHRESHO(0) |
 		V_FW_RI_RES_WR_CIDXFTHRESH(0) |
 		V_FW_RI_RES_WR_EQSIZE(eqsize));


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