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authorSteve Wise <swise@opengridcomputing.com>2010-08-28 15:35:05 +0200
committerRoland Dreier <rolandd@cisco.com>2010-09-02 23:52:21 +0200
commitdc4e96ce2dceb649224ee84f83592aac8c54c9b7 (patch)
tree353967b077a02a3ed4f003a2a8abe36f3136d5f8 /drivers/infiniband
parentmm: keep a guard page below a grow-down stack segment (diff)
downloadlinux-dc4e96ce2dceb649224ee84f83592aac8c54c9b7.tar.xz
linux-dc4e96ce2dceb649224ee84f83592aac8c54c9b7.zip
RDMA/cxgb3: Don't exceed the max HW CQ depth
The max depth supported by T3 is 64K entries. This fixes a bug introduced in commit 9918b28d ("RDMA/cxgb3: Increase the max CQ depth") that causes stalls and possibly crashes in large MPI clusters. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Cc: <stable@kernel.org> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/hw/cxgb3/cxio_hal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.h b/drivers/infiniband/hw/cxgb3/cxio_hal.h
index 8f0caf7d4482..78fbe9ffe7f0 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.h
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.h
@@ -53,7 +53,7 @@
#define T3_MAX_PBL_SIZE 256
#define T3_MAX_RQ_SIZE 1024
#define T3_MAX_QP_DEPTH (T3_MAX_RQ_SIZE-1)
-#define T3_MAX_CQ_DEPTH 262144
+#define T3_MAX_CQ_DEPTH 65536
#define T3_MAX_NUM_STAG (1<<15)
#define T3_MAX_MR_SIZE 0x100000000ULL
#define T3_PAGESIZE_MASK 0xffff000 /* 4KB-128MB */