commit 23bf40424a0f641ca7ff4225add4aa592086bdd5
author Wei Yongjun <weiyj.lk@gmail.com> Sat Oct 01 00:38:08 2016 +0800
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> Sun Oct 02 17:32:17 2016 +0200
tree 6c312d33e56db92c0083515b8574d5772586c35d
parent 612e1c94bfe9736cef0a9b86db792fd863be7733

staging: rtl8188eu: fix double unlock error in rtw_resume_process()

Fix following static checker warning:
    drivers/staging/rtl8188eu/os_dep/usb_intf.c:311 rtw_resume_process()
    error: double unlock 'mutex:&pwrpriv->mutex_lock'

Fixes: eaf47b713b60 ("staging: rtl8188eu: fix missing unlock on error in rtw_resume_process()")
Reported-By: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8188eu/os_dep/usb_intf.c

diff --git a/drivers/staging/rtl8188eu/os_dep/usb_intf.c b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
index b2bc09e..68e1e6b 100644
--- a/drivers/staging/rtl8188eu/os_dep/usb_intf.c
+++ b/drivers/staging/rtl8188eu/os_dep/usb_intf.c
@@ -294,8 +294,10 @@
 	pwrpriv->bkeepfwalive = false;
 
 	pr_debug("bkeepfwalive(%x)\n", pwrpriv->bkeepfwalive);
-	if (pm_netdev_open(pnetdev, true) != 0)
+	if (pm_netdev_open(pnetdev, true) != 0) {
+		mutex_unlock(&pwrpriv->mutex_lock);
 		goto exit;
+	}
 
 	netif_device_attach(pnetdev);
 	netif_carrier_on(pnetdev);
@@ -306,10 +308,8 @@
 
 	ret = 0;
 exit:
-	if (pwrpriv) {
+	if (pwrpriv)
 		pwrpriv->bInSuspend = false;
-		mutex_unlock(&pwrpriv->mutex_lock);
-	}
 	pr_debug("<===  %s return %d.............. in %dms\n", __func__,
 		ret, jiffies_to_msecs(jiffies - start_time));