RDMA/cxgb4: Limit MAXBURST EQ context field to 256B
Steve Wise [Fri, 21 Jan 2011 17:00:29 +0000 (17:00 +0000)]
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

index 2080090..4f0be25 100644 (file)
@@ -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));