netdev - [PATCH net-next] netdevsim: correctly check return value of debugfs_create

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Message-Id: <20171208005250.2972-1-bhole_prashant_q7@lab.ntt.co.jp>
Date:   Fri,  8 Dec 2017 09:52:50 +0900
From:   Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
To:     "David S . Miller" <davem@...emloft.net>
Cc:     Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>,
        netdev@...r.kernel.org,
        Jakub Kicinski <jakub.kicinski@...ronome.com>
Subject: [PATCH net-next] netdevsim: correctly check return value of debugfs_create_dir

Return value is now checked with IS_ERROR_OR_NULL because
debugfs_create_dir doesn't return error value. It either returns
NULL or a valid pointer.

Signed-off-by: Prashant Bhole <bhole_prashant_q7@....ntt.co.jp>
---
 drivers/net/netdevsim/netdev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/netdevsim/netdev.c b/drivers/net/netdevsim/netdev.c
index eb8c679fca9f..88d8ee2c89da 100644
--- a/drivers/net/netdevsim/netdev.c
+++ b/drivers/net/netdevsim/netdev.c
@@ -469,7 +469,7 @@ static int __init nsim_module_init(void)
 	int err;
 
 	nsim_ddir = debugfs_create_dir(DRV_NAME, NULL);
-	if (IS_ERR(nsim_ddir))
+	if (IS_ERR_OR_NULL(nsim_ddir))
 		return PTR_ERR(nsim_ddir);
 
 	err = bus_register(&nsim_bus);
-- 
2.13.6