cfg80211: refuse to .set_monitor_channel when non-monitors are present
Having .set_monitor_channel work with non-monitor interfaces running would make interface combinations accounting ambiguous. Signed-off-by: Michal Kazior <michal.kazior@tieto.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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4f03c1ed89
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@ -85,6 +85,8 @@ int cfg80211_set_monitor_channel(struct cfg80211_registered_device *rdev,
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if (!rdev->ops->set_monitor_channel)
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return -EOPNOTSUPP;
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if (!cfg80211_has_monitors_only(rdev))
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return -EBUSY;
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chan = rdev_freq_to_chan(rdev, freq, chantype);
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if (!chan)
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