Commit ac4d82fa authored by Pontus Fuchs's avatar Pontus Fuchs Committed by Johannes Berg
Browse files

mac80211: Disallow changing chan type on monitor when CHAN_MODE_FIXED

If you add a monitor interface in parallel to a normal interface
mac80211 will let you to change the channel type on the monitor
interface even if you are connected. Add an explicit check to
disallow this.
Signed-off-by: default avatarPontus Fuchs <>
[fix typo in commit log, use sdata instead of netdev]
Signed-off-by: default avatarJohannes Berg <>
parent e979e33c
......@@ -689,7 +689,8 @@ static int ieee80211_set_channel(struct wiphy *wiphy,
return -EBUSY;
if (local->oper_channel != chan)
if (local->oper_channel != chan ||
(!sdata && local->_oper_channel_type != channel_type))
return -EBUSY;
if (!sdata && local->_oper_channel_type == channel_type)
return 0;
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