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authorDavid S. Miller <davem@davemloft.net>2009-12-29 19:44:25 -0800
committerDavid S. Miller <davem@davemloft.net>2009-12-29 19:44:25 -0800
commit7f9d3577e2603ca279c3176b696eba392f21cbe2 (patch)
treee2135eddba600910cdebb54c8b01de53473ecefb /net/wireless/scan.c
parent96c5340147584481ef0c0afbb5423f7563c1d24a (diff)
parent55afc80b2ab100618c17af77915f75307b6bd5d1 (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6
Diffstat (limited to 'net/wireless/scan.c')
-rw-r--r--net/wireless/scan.c13
1 files changed, 9 insertions, 4 deletions
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 12dfa62..0c2cbbe 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -601,7 +601,7 @@ int cfg80211_wext_siwscan(struct net_device *dev,
struct cfg80211_registered_device *rdev;
struct wiphy *wiphy;
struct iw_scan_req *wreq = NULL;
- struct cfg80211_scan_request *creq;
+ struct cfg80211_scan_request *creq = NULL;
int i, err, n_channels = 0;
enum ieee80211_band band;
@@ -694,8 +694,10 @@ int cfg80211_wext_siwscan(struct net_device *dev,
/* translate "Scan for SSID" request */
if (wreq) {
if (wrqu->data.flags & IW_SCAN_THIS_ESSID) {
- if (wreq->essid_len > IEEE80211_MAX_SSID_LEN)
- return -EINVAL;
+ if (wreq->essid_len > IEEE80211_MAX_SSID_LEN) {
+ err = -EINVAL;
+ goto out;
+ }
memcpy(creq->ssids[0].ssid, wreq->essid, wreq->essid_len);
creq->ssids[0].ssid_len = wreq->essid_len;
}
@@ -707,12 +709,15 @@ int cfg80211_wext_siwscan(struct net_device *dev,
err = rdev->ops->scan(wiphy, dev, creq);
if (err) {
rdev->scan_req = NULL;
- kfree(creq);
+ /* creq will be freed below */
} else {
nl80211_send_scan_start(rdev, dev);
+ /* creq now owned by driver */
+ creq = NULL;
dev_hold(dev);
}
out:
+ kfree(creq);
cfg80211_unlock_rdev(rdev);
return err;
}