cfg80211: warn when wiphy_apply_custom_regulatory() does nothing
Device drivers using wiphy_apply_custom_regulatory() want some regulatory settings applied to their wiphy, if no bands were configured on the wiphy then something went wrong. Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -1344,13 +1344,22 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
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const struct ieee80211_regdomain *regd)
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{
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enum ieee80211_band band;
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unsigned int bands_set = 0;
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mutex_lock(&cfg80211_mutex);
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for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
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if (wiphy->bands[band])
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handle_band_custom(wiphy, band, regd);
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if (!wiphy->bands[band])
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continue;
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handle_band_custom(wiphy, band, regd);
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bands_set++;
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}
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mutex_unlock(&cfg80211_mutex);
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/*
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* no point in calling this if it won't have any effect
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* on your device's supportd bands.
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*/
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WARN_ON(!bands_set);
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}
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EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
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