ath9k: fix regulatory issues with multiple cards

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23168 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/mac80211/patches/520-ath9k_multiple_cards_fix.patch b/package/mac80211/patches/520-ath9k_multiple_cards_fix.patch
new file mode 100644 (file)
index 0000000..349807b
--- /dev/null
+++ b/package/mac80211/patches/520-ath9k_multiple_cards_fix.patch
@@ -0,0 +1,91 @@
+--- a/drivers/net/wireless/ath/ath9k/init.c
++++ b/drivers/net/wireless/ath/ath9k/init.c
+@@ -57,7 +57,7 @@ MODULE_PARM_DESC(blink, "Enable LED blin
+  * on 5 MHz steps, we support the channels which we know
+  * we have calibration data for all cards though to make
+  * this static */
+-static struct ieee80211_channel ath9k_2ghz_chantable[] = {
++static const struct ieee80211_channel ath9k_2ghz_chantable[] = {
+       CHAN2G(2412, 0), /* Channel 1 */
+       CHAN2G(2417, 1), /* Channel 2 */
+       CHAN2G(2422, 2), /* Channel 3 */
+@@ -78,7 +78,7 @@ static struct ieee80211_channel ath9k_2g
+  * on 5 MHz steps, we support the channels which we know
+  * we have calibration data for all cards though to make
+  * this static */
+-static struct ieee80211_channel ath9k_5ghz_chantable[] = {
++static const struct ieee80211_channel ath9k_5ghz_chantable[] = {
+       /* _We_ call this UNII 1 */
+       CHAN5G(5180, 14), /* Channel 36 */
+       CHAN5G(5200, 15), /* Channel 40 */
+@@ -478,10 +478,17 @@ err:
+       return -EIO;
+ }
+ 
+-static void ath9k_init_channels_rates(struct ath_softc *sc)
++static int ath9k_init_channels_rates(struct ath_softc *sc)
+ {
++      void *channels;
++
+       if (test_bit(ATH9K_MODE_11G, sc->sc_ah->caps.wireless_modes)) {
+-              sc->sbands[IEEE80211_BAND_2GHZ].channels = ath9k_2ghz_chantable;
++              channels = kmemdup(ath9k_2ghz_chantable,
++                      sizeof(ath9k_2ghz_chantable), GFP_KERNEL);
++              if (!channels)
++                  return -ENOMEM;
++
++              sc->sbands[IEEE80211_BAND_2GHZ].channels = channels;
+               sc->sbands[IEEE80211_BAND_2GHZ].band = IEEE80211_BAND_2GHZ;
+               sc->sbands[IEEE80211_BAND_2GHZ].n_channels =
+                       ARRAY_SIZE(ath9k_2ghz_chantable);
+@@ -491,7 +498,15 @@ static void ath9k_init_channels_rates(st
+       }
+ 
+       if (test_bit(ATH9K_MODE_11A, sc->sc_ah->caps.wireless_modes)) {
+-              sc->sbands[IEEE80211_BAND_5GHZ].channels = ath9k_5ghz_chantable;
++              channels = kmemdup(ath9k_5ghz_chantable,
++                      sizeof(ath9k_5ghz_chantable), GFP_KERNEL);
++              if (!channels) {
++                      if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
++                              kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
++                      return -ENOMEM;
++              }
++
++              sc->sbands[IEEE80211_BAND_5GHZ].channels = channels;
+               sc->sbands[IEEE80211_BAND_5GHZ].band = IEEE80211_BAND_5GHZ;
+               sc->sbands[IEEE80211_BAND_5GHZ].n_channels =
+                       ARRAY_SIZE(ath9k_5ghz_chantable);
+@@ -500,6 +515,7 @@ static void ath9k_init_channels_rates(st
+               sc->sbands[IEEE80211_BAND_5GHZ].n_bitrates =
+                       ARRAY_SIZE(ath9k_legacy_rates) - 4;
+       }
++      return 0;
+ }
+ 
+ static void ath9k_init_misc(struct ath_softc *sc)
+@@ -602,8 +618,11 @@ static int ath9k_init_softc(u16 devid, s
+       if (ret)
+               goto err_btcoex;
+ 
++      ret = ath9k_init_channels_rates(sc);
++      if (ret)
++              goto err_btcoex;
++
+       ath9k_init_crypto(sc);
+-      ath9k_init_channels_rates(sc);
+       ath9k_init_misc(sc);
+ 
+       return 0;
+@@ -784,6 +803,12 @@ static void ath9k_deinit_softc(struct at
+ {
+       int i = 0;
+ 
++      if (sc->sbands[IEEE80211_BAND_2GHZ].channels)
++              kfree(sc->sbands[IEEE80211_BAND_2GHZ].channels);
++
++      if (sc->sbands[IEEE80211_BAND_5GHZ].channels)
++              kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
++
+         if ((sc->btcoex.no_stomp_timer) &&
+           sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
+               ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);