netdev - [PATCH net-next 2/2] mctp: test: defer mdev setup until we've registered

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Message-Id: <20211002022656.1681956-2-jk@codeconstruct.com.au>
Date:   Sat,  2 Oct 2021 10:26:56 +0800
From:   Jeremy Kerr <jk@...econstruct.com.au>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matt Johnston <matt@...econstruct.com.au>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        linux-kselftest@...r.kernel.org
Subject: [PATCH net-next 2/2] mctp: test: defer mdev setup until we've registered

The MCTP device isn't available until we've registered the netdev, so
defer storing our convenience pointer.

Signed-off-by: Jeremy Kerr <jk@...econstruct.com.au>
---
 net/mctp/test/utils.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/mctp/test/utils.c b/net/mctp/test/utils.c
index e2ab1f3da357..cc6b8803aa9d 100644
--- a/net/mctp/test/utils.c
+++ b/net/mctp/test/utils.c
@@ -46,17 +46,17 @@ struct mctp_test_dev *mctp_test_create_dev(void)
 	dev = netdev_priv(ndev);
 	dev->ndev = ndev;
 
-	rcu_read_lock();
-	dev->mdev = __mctp_dev_get(ndev);
-	mctp_dev_hold(dev->mdev);
-	rcu_read_unlock();
-
 	rc = register_netdev(ndev);
 	if (rc) {
 		free_netdev(ndev);
 		return NULL;
 	}
 
+	rcu_read_lock();
+	dev->mdev = __mctp_dev_get(ndev);
+	mctp_dev_hold(dev->mdev);
+	rcu_read_unlock();
+
 	return dev;
 }
 
-- 
2.30.2