linux-kernel - [PATCH 2.6.30] RDMA/cxgb3: Remove modulo math.

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Message-Id: <20090210184448.22891.31130.stgit@dell3.ogc.int>
Date:	Tue, 10 Feb 2009 12:44:48 -0600
From:	Steve Wise <swise@...ngridcomputing.com>
To:	rdreier@...co.com
Cc:	general@...ts.openfabrics.org, randy.dunlap@...cle.com,
	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2.6.30] RDMA/cxgb3: Remove modulo math.

From: Steve Wise <swise@...ngridcomputing.com>

Removes the need for special u64 math on i386 systems.

Fixes i386 build break in linux-next introduced by 
commit 1e27e8cee0698259ccb1fe6abeaf4b48969c0945.

Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---

 drivers/infiniband/hw/cxgb3/iwch_qp.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c
index 2cf6f13..5bb299a 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_qp.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c
@@ -232,8 +232,8 @@ static int iwch_sgl2pbl_map(struct iwch_dev *rhp, struct ib_sge *sg_list,
 			return -EINVAL;
 		}
 		offset = sg_list[i].addr - mhp->attr.va_fbo;
-		offset += ((u64) mhp->attr.va_fbo) %
-		          (1UL << (12 + mhp->attr.page_size));
+		offset += mhp->attr.va_fbo &
+			  ((1UL << (12 + mhp->attr.page_size)) - 1);
 		pbl_addr[i] = ((mhp->attr.pbl_addr -
 			        rhp->rdev.rnic_info.pbl_base) >> 3) +
 			      (offset >> (12 + mhp->attr.page_size));
@@ -263,8 +263,8 @@ static int build_rdma_recv(struct iwch_qp *qhp, union t3_wr *wqe,
 		wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
 
 		/* to in the WQE == the offset into the page */
-		wqe->recv.sgl[i].to = cpu_to_be64(((u32) wr->sg_list[i].addr) %
-				(1UL << (12 + page_size[i])));
+		wqe->recv.sgl[i].to = cpu_to_be64(((u64) wr->sg_list[i].addr) &
+				((1UL << (12 + page_size[i]))-1));
 
 		/* pbl_addr is the adapters address in the PBL */
 		wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]);
--
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