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authorDotan Barak <dotanb@mellanox.co.il>2006-07-13 11:05:49 +0300
committerRoland Dreier <rolandd@cisco.com>2006-07-24 07:20:32 -0700
commit1252c517cf3df240ae51946a096035765dfd2e6d (patch)
tree87b37913a8bfebdfef3c2ff15d625e1d863bd5b6
parent43db2bc04409b1e1b74f9768e3284cec18a87d0b (diff)
IB/mthca: Fix SRQ limit event range check
Mem-free HCAs always keep one spare SRQ WQE, so the SRQ limit cannot be set beyond srq->max - 1. Signed-off-by: Dotan Barak <dotanb@mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
-rw-r--r--drivers/infiniband/hw/mthca/mthca_srq.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/mthca/mthca_srq.c b/drivers/infiniband/hw/mthca/mthca_srq.c
index fab417c5cf4..b60a9d79ae5 100644
--- a/drivers/infiniband/hw/mthca/mthca_srq.c
+++ b/drivers/infiniband/hw/mthca/mthca_srq.c
@@ -370,7 +370,8 @@ int mthca_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
return -EINVAL;
if (attr_mask & IB_SRQ_LIMIT) {
- if (attr->srq_limit > srq->max)
+ u32 max_wr = mthca_is_memfree(dev) ? srq->max - 1 : srq->max;
+ if (attr->srq_limit > max_wr)
return -EINVAL;
mutex_lock(&srq->mutex);