staging: wlan-ng: Fix dereference before NULL check
Smatch is warning about a dereference before we check for NULL.
This patch moves the dereference to after the NULL check.
Smatch warning:
drivers/staging/wlan-ng/cfg80211.c:345 prism2_scan() warn:
variable dereferenced before check 'request' (see line 332)
Signed-off-by: Emil Goode <emilgoode@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/staging/wlan-ng/cfg80211.c b/drivers/staging/wlan-ng/cfg80211.c
index 0970127..57a2b05 100644
--- a/drivers/staging/wlan-ng/cfg80211.c
+++ b/drivers/staging/wlan-ng/cfg80211.c
@@ -329,9 +329,9 @@
int prism2_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
{
- struct net_device *dev = request->wdev->netdev;
+ struct net_device *dev;
struct prism2_wiphy_private *priv = wiphy_priv(wiphy);
- wlandevice_t *wlandev = dev->ml_priv;
+ wlandevice_t *wlandev;
struct p80211msg_dot11req_scan msg1;
struct p80211msg_dot11req_scan_results msg2;
struct cfg80211_bss *bss;
@@ -345,6 +345,9 @@
if (!request)
return -EINVAL;
+ dev = request->wdev->netdev;
+ wlandev = dev->ml_priv;
+
if (priv->scan_request && priv->scan_request != request)
return -EBUSY;