From: Johannes Berg Date: Fri, 10 Jul 2009 22:17:32 +0000 (+0200) Subject: cfg80211: fix more bugs in mlme handling X-Git-Tag: firefly_0821_release~12983^2~544^2~99 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=596a07c18b35c9df2fb212856241ae0dfe3162b9;p=firefly-linux-kernel-4.4.55.git cfg80211: fix more bugs in mlme handling The "what-was-I-thinking-if-anything" patch. Clearly, if cfg80211_send_disassoc() does wdev_lock() and then calls __cfg80211_send_disassoc(), the latter shouldn't lock again. And the sme_state test is ... no further comments. Signed-off-by: Johannes Berg Signed-off-by: John W. Linville --- diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c index 8e4ce2fdf862..5b9b22120824 100644 --- a/net/wireless/mlme.c +++ b/net/wireless/mlme.c @@ -178,12 +178,12 @@ static void __cfg80211_send_disassoc(struct net_device *dev, bool from_ap; bool done = false; - wdev_lock(wdev); + ASSERT_WDEV_LOCK(wdev); nl80211_send_disassoc(rdev, dev, buf, len, GFP_KERNEL); - if (!wdev->sme_state == CFG80211_SME_CONNECTED) - goto out; + if (wdev->sme_state != CFG80211_SME_CONNECTED) + return; if (wdev->current_bss && memcmp(wdev->current_bss, bssid, ETH_ALEN) == 0) { @@ -205,8 +205,6 @@ static void __cfg80211_send_disassoc(struct net_device *dev, from_ap = memcmp(mgmt->da, dev->dev_addr, ETH_ALEN) == 0; __cfg80211_disconnected(dev, NULL, 0, reason_code, from_ap); - out: - wdev_unlock(wdev); } void cfg80211_send_disassoc(struct net_device *dev, const u8 *buf, size_t len,