1 files changed, 30 insertions, 0 deletions

diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 6fd7bf7b4481..57eaea26b67a 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -285,3 +285,33 @@ int cfg80211_wext_siwmlme(struct net_device *dev,
         }
 }
 EXPORT_SYMBOL(cfg80211_wext_siwmlme);
+
+
+/**
+ * cfg80211_wext_freq - get wext frequency for non-"auto"
+ * @wiphy: the wiphy
+ * @freq: the wext freq encoding
+ *
+ * Returns a channel, %NULL for auto, or an ERR_PTR for errors!
+ */
+struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
+                                             struct iw_freq *freq)
+{
+        if (freq->e == 0) {
+                if (freq->m < 0)
+                        return NULL;
+                else
+                        return ieee80211_get_channel(wiphy,
+                                ieee80211_channel_to_frequency(freq->m));
+        } else {
+                int i, div = 1000000;
+                for (i = 0; i < freq->e; i++)
+                        div /= 10;
+                if (div > 0)
+                        return ieee80211_get_channel(wiphy, freq->m / div);
+                else
+                        return ERR_PTR(-EINVAL);
+        }
+
+}
+EXPORT_SYMBOL(cfg80211_wext_freq);