From 4fa45725df0f00c2bf86a0fc2670e88bfe0ceee7 Mon Sep 17 00:00:00 2001 From: Jon Mason Date: Sun, 9 Mar 2008 13:54:12 -0700 Subject: [PATCH] RDMA/cxgb3: Fix iwch_create_cq() off-by-one error The cxbg3 driver is unnecessarily decreasing the number of CQ entries by one when creating a CQ. This will cause the CQ not to have as many entries as requested by the user if the user requests a power of 2 size. Signed-off-by: Jon Mason Acked-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb3/iwch_provider.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c index ee3d63cd1f96..b2ea9210467f 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_provider.c +++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c @@ -189,7 +189,7 @@ static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int ve return ERR_PTR(-ENOMEM); } chp->rhp = rhp; - chp->ibcq.cqe = (1 << chp->cq.size_log2) - 1; + chp->ibcq.cqe = 1 << chp->cq.size_log2; spin_lock_init(&chp->lock); atomic_set(&chp->refcnt, 1); init_waitqueue_head(&chp->wait); -- 2.20.1