From: Dan Carpenter <dan.carpenter@oracle.com>
To: Lijun Ou <oulijun-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
Cc: "Wei Hu(Xavier)"
<xavier.huwei-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>,
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
Hal Rosenstock
<hal.rosenstock-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
kernel-janitors-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [patch 1/2] IB/hns: Fix a couple pointer math bugs
Date: Fri, 14 Oct 2016 07:28:37 +0000 [thread overview]
Message-ID: <20161014072837.GA15238@mwanda> (raw)
"wqe" is a void pointer so adding sizeof() works. The original code
adds sizeof() multiplied by sizeof() so it doesn't work at all.
Fixes: 9a4435375cd1 ('IB/hns: Add driver files for hns RoCE driver')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
index 399f5de..58b150e 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v1.c
@@ -205,8 +205,7 @@ int hns_roce_v1_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
(wr->send_flags & IB_SEND_FENCE ?
(cpu_to_le32(HNS_ROCE_WQE_FENCE)) : 0);
- wqe = (struct hns_roce_wqe_ctrl_seg *)wqe +
- sizeof(struct hns_roce_wqe_ctrl_seg);
+ wqe = wqe + sizeof(struct hns_roce_wqe_ctrl_seg);
switch (wr->opcode) {
case IB_WR_RDMA_READ:
@@ -235,8 +234,7 @@ int hns_roce_v1_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
break;
}
ctrl->flag |= cpu_to_le32(ps_opcode);
- wqe = (struct hns_roce_wqe_raddr_seg *)wqe +
- sizeof(struct hns_roce_wqe_raddr_seg);
+ wqe = wqe + sizeof(struct hns_roce_wqe_raddr_seg);
dseg = wqe;
if (wr->send_flags & IB_SEND_INLINE && wr->num_sge) {
next reply other threads:[~2016-10-14 7:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-14 7:28 Dan Carpenter [this message]
2016-10-14 8:39 ` [patch 1/2] IB/hns: Fix a couple pointer math bugs oulijun
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