linux-kernel - [PATCH] RDMA/hns: return 0 rather than return a garbage status value

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Message-Id: <20170929201308.4704-1-colin.king@canonical.com>
Date:   Fri, 29 Sep 2017 21:13:08 +0100
From:   Colin King <colin.king@...onical.com>
To:     Lijun Ou <oulijun@...wei.com>, Wei Hu <xavier.huwei@...wei.com>,
        Doug Ledford <dledford@...hat.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        linux-rdma@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/hns: return 0 rather than return a garbage status value

From: Colin Ian King <colin.king@...onical.com>

For the case where hr_qp->state == IB_QPS_RESET, an uninitialized
value in ret is being returned by function hns_roce_v2_query_qp.
Fix this by setting ret to 0 for this specific return condition.

Detected by CoverityScan, CID#1457203 ("Unitialized scalar variable")

Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
index 4870b51caab9..791dae72e775 100644
--- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
+++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
@@ -2805,6 +2805,7 @@ static int hns_roce_v2_query_qp(struct ib_qp *ibqp, struct ib_qp_attr *qp_attr,
 
 	if (hr_qp->state == IB_QPS_RESET) {
 		qp_attr->qp_state = IB_QPS_RESET;
+		ret = 0;
 		goto done;
 	}
 
-- 
2.14.1