From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Sun, 25 May 2014 20:43:18 +0000 (+0200)
Subject: staging: rtl8723au: rtw_wdev_alloc(): Don't register wiphy before kmalloc() completed
X-Git-Tag: next-20140530~19^2~218
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=d165e4efbc6d76cff51abb523567a840cb6623b9;p=karo-tx-linux.git

staging: rtl8723au: rtw_wdev_alloc(): Don't register wiphy before kmalloc() completed

There is no point starting to register the wiphy and then having to
unregister it again if the followon kmalloc() fails.

Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
index 9f9f034fd5e6..4528c95b8e67 100644
--- a/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
+++ b/drivers/staging/rtl8723au/os_dep/ioctl_cfg80211.c
@@ -3367,22 +3367,24 @@ int rtw_wdev_alloc(struct rtw_adapter *padapter, struct device *dev)
 		ret = -ENOMEM;
 		goto exit;
 	}
+
+	/*  wdev */
+	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
+	if (!wdev) {
+		DBG_8723A("Couldn't allocate wireless device\n");
+		ret = -ENOMEM;
+		goto free_wiphy;
+	}
+
 	set_wiphy_dev(wiphy, dev);
 	rtw_cfg80211_preinit_wiphy(padapter, wiphy);
 
 	ret = wiphy_register(wiphy);
 	if (ret < 0) {
 		DBG_8723A("Couldn't register wiphy device\n");
-		goto free_wiphy;
+		goto free_wdev;
 	}
 
-	/*  wdev */
-	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
-	if (!wdev) {
-		DBG_8723A("Couldn't allocate wireless device\n");
-		ret = -ENOMEM;
-		goto unregister_wiphy;
-	}
 	wdev->wiphy = wiphy;
 	wdev->netdev = pnetdev;
 	/* wdev->iftype = NL80211_IFTYPE_STATION; */
@@ -3408,8 +3410,8 @@ int rtw_wdev_alloc(struct rtw_adapter *padapter, struct device *dev)
 		pwdev_priv->power_mgmt = false;
 
 	return ret;
-unregister_wiphy:
-	wiphy_unregister(wiphy);
+free_wdev:
+	kfree(wdev);
 free_wiphy:
 	wiphy_free(wiphy);
 exit: