From: Benoit Papillault Date: Fri, 15 Jan 2010 11:21:37 +0000 (+0100) Subject: mac80211: check that ieee80211_set_power_mgmt only handles STA interfaces. X-Git-Tag: v2.6.33~5^2~1^2~22 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e5de30c9bf4a39db9f54c4a373470ce65881ade0;p=platform%2Fupstream%2Fkernel-adaptation-pc.git mac80211: check that ieee80211_set_power_mgmt only handles STA interfaces. ieee80211_set_power_mgmt is meant for STA interfaces only. Moreover, since sdata->u.mgd.mtx is only initialized for STA interfaces, using this code for any other type of interface (like creating a monitor interface) will result in a oops. Cc: stable@kernel.org Signed-off-by: Benoit Papillault Signed-off-by: John W. Linville --- diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 6dc3579..9ae1a47 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1331,6 +1331,9 @@ static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev, struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); struct ieee80211_conf *conf = &local->hw.conf; + if (sdata->vif.type != NL80211_IFTYPE_STATION) + return -EOPNOTSUPP; + if (!(local->hw.flags & IEEE80211_HW_SUPPORTS_PS)) return -EOPNOTSUPP;