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RDMA/cxgb4: Limit MAXBURST EQ context field to 256B
authorSteve Wise <swise@opengridcomputing.com>
Fri, 21 Jan 2011 17:00:29 +0000 (17:00 +0000)
committerRoland Dreier <roland@purestorage.com>
Fri, 28 Jan 2011 23:34:24 +0000 (15:34 -0800)
MAXBURST cannot exceed 256B for on-chip queues.  With a 512B MAXBURST,
we can lock up the chip.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <roland@purestorage.com>
drivers/infiniband/hw/cxgb4/qp.c patch | blob | blame | history

diff --git a/drivers/infiniband/hw/cxgb4/qp.c b/drivers/infiniband/hw/cxgb4/qp.c
index 20800900ef3f3830b5903f1b7a9cc16cc53f0797..4f0be25cab1adc3fd1ad6ca641fa3b32bd90f7bf 100644 (file)
--- 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 *rdev, struct t4_wq *wq,
                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 *rdev, struct t4_wq *wq,
                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));