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@xxxxxxxxxxx>
---
net/wireless/reg.c | 13 +++++++++++--
1 files changed, 11 insertions(+), 2 deletions(-)
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 48db569..0eac285 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1342,13 +1342,22 @@ void wiphy_apply_custom_regulatory(struct wiphy *wiphy,
const struct ieee80211_regdomain *regd)
{
enum ieee80211_band band;
+ unsigned int bands_set = 0;
mutex_lock(&cfg80211_mutex);
for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
- if (wiphy->bands[band])
- handle_band_custom(wiphy, band, regd);
+ if (!wiphy->bands[band])
+ continue;
+ handle_band_custom(wiphy, band, regd);
+ bands_set++;
}
mutex_unlock(&cfg80211_mutex);
+
+ /*
+ * no point in calling this if it won't have any effect
+ * on your device's supportd bands.
+ */
+ WARN_ON(!bands_set);
}
EXPORT_SYMBOL(wiphy_apply_custom_regulatory);
--
1.6.0.6
--
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