linux-kernel - [PATCH] IB/srpt: Fix passing zero to 'PTR

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Date:   Thu, 12 Nov 2020 22:54:43 +0800
From:   YueHaibing <yuehaibing@...wei.com>
To:     <bvanassche@....org>, <dledford@...hat.com>, <jgg@...pe.ca>
CC:     <linux-rdma@...r.kernel.org>, <target-devel@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, YueHaibing <yuehaibing@...wei.com>
Subject: [PATCH] IB/srpt: Fix passing zero to 'PTR_ERR'

Fix smatch warning:

drivers/infiniband/ulp/srpt/ib_srpt.c:2341 srpt_cm_req_recv() warn: passing zero to 'PTR_ERR'

Use PTR_ERR_OR_ZERO instead of PTR_ERR

Fixes: 847462de3a0a ("IB/srpt: Fix srpt_cm_req_recv() error path (1/2)")
Signed-off-by: YueHaibing <yuehaibing@...wei.com>
---
 drivers/infiniband/ulp/srpt/ib_srpt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/infiniband/ulp/srpt/ib_srpt.c b/drivers/infiniband/ulp/srpt/ib_srpt.c
index 6be60aa5ffe2..3ff24b5048ac 100644
--- a/drivers/infiniband/ulp/srpt/ib_srpt.c
+++ b/drivers/infiniband/ulp/srpt/ib_srpt.c
@@ -2338,7 +2338,7 @@ static int srpt_cm_req_recv(struct srpt_device *const sdev,
 
 	if (IS_ERR_OR_NULL(ch->sess)) {
 		WARN_ON_ONCE(ch->sess == NULL);
-		ret = PTR_ERR(ch->sess);
+		ret = PTR_ERR_OR_ZERO(ch->sess);
 		ch->sess = NULL;
 		pr_info("Rejected login for initiator %s: ret = %d.\n",
 			ch->sess_name, ret);
-- 
2.17.1