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staging: wlan-ng: Fix dereference before NULL check

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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>
This commit is contained in:
Emil Goode 2012-09-18 18:04:07 +02:00 committed by Greg Kroah-Hartman
parent 3d9562a6ed
commit 5d5d7c3b93
1 changed files with 5 additions and 2 deletions
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7
drivers/staging/wlan-ng/cfg80211.c
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@ -329,9 +329,9 @@ int prism2_get_station(struct wiphy *wiphy, struct net_device *dev,
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 @@ int prism2_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
if (!request)
return -EINVAL;
dev = request->wdev->netdev;
wlandev = dev->ml_priv;
if (priv->scan_request && priv->scan_request != request)
return -EBUSY;