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cw1200: fix missing unlock on error in cw1200_hw_scan()

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Add the missing unlock before return from function cw1200_hw_scan()
in the error handling case.

Fixes: 4f68ef64cd ("cw1200: Fix concurrency use-after-free bugs in cw1200_hw_scan()")
Signed-off-by: Wei Yongjun <[email protected]>
Acked-by: Jia-Ju Bai <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
This commit is contained in:
Wei Yongjun authored and Kalle Valo committed 2019-01-10 13:35:02 +02:00
1 parent 4d95f99c59
commit 51c8d24101
1 file changed
+4 -1
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drivers/net/wireless/st/cw1200/scan.c
+4 -1
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@@ -84,8 +84,11 @@ int cw1200_hw_scan(struct ieee80211_hw *hw,
frame.skb = ieee80211_probereq_get(hw, priv->vif->addr, NULL, 0,
req->ie_len);
if (!frame.skb)
if (!frame.skb) {
mutex_unlock(&priv->conf_mutex);
up(&priv->scan.lock);
return -ENOMEM;
}
if (req->ie_len)
skb_put_data(frame.skb, req->ie, req->ie_len);