netdev - [PATCH net-next] ieee802154: hwsim: fix missing unlock on error in hwsim_add

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Date:   Wed, 8 Aug 2018 03:10:39 +0000
From:   Wei Yongjun <weiyongjun1@...wei.com>
To:     Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>
CC:     Wei Yongjun <weiyongjun1@...wei.com>, <linux-wpan@...r.kernel.org>,
        <netdev@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: [PATCH net-next] ieee802154: hwsim: fix missing unlock on error in hwsim_add_one()

Add the missing unlock before return from function hwsim_add_one()
in the error handling case.

Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Wei Yongjun <weiyongjun1@...wei.com>
---
 drivers/net/ieee802154/mac802154_hwsim.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index f4e9205..44d398c 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -810,8 +810,10 @@ static int hwsim_add_one(struct genl_info *info, struct device *dev,
 	mutex_lock(&hwsim_phys_lock);
 	if (init) {
 		err = hwsim_subscribe_all_others(phy);
-		if (err < 0)
+		if (err < 0) {
+			mutex_unlock(&hwsim_phys_lock);
 			goto err_reg;
+		}
 	}
 	list_add_tail(&phy->list, &hwsim_phys);
 	mutex_unlock(&hwsim_phys_lock);