ath5k: Enable 802.11j 4.9GHz frequencies

This enables 4.9GHz frequencies in ath5k if they are allowed as indicated by
the regulatory domain code. Currently this is MKK9_MKKC (0xfe).

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/net/wireless/ath/ath5k/caps.c b/drivers/net/wireless/ath/ath5k/caps.c
index 39baee17d0da..f77e8a703c5c 100644
--- a/drivers/net/wireless/ath/ath5k/caps.c
+++ b/drivers/net/wireless/ath/ath5k/caps.c
@@ -57,9 +57,8 @@ int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
                  * XXX current ieee80211 implementation because the IEEE
                  * XXX channel mapping does not support negative channel
                  * XXX numbers (2312MHz is channel -19). Of course, this
-                 * XXX doesn't matter because these channels are out of range
-                 * XXX but some regulation domains like MKK (Japan) will
-                 * XXX support frequencies somewhere around 4.8GHz.
+                 * XXX doesn't matter because these channels are out of the
+                 * XXX legal range.
                  */
 
                 /*
@@ -67,8 +66,10 @@ int ath5k_hw_set_capabilities(struct ath5k_hw *ah)
                  */
 
                 if (AR5K_EEPROM_HDR_11A(ee_header)) {
-                        /* 4920 */
-                        caps->cap_range.range_5ghz_min = 5005;
+                        if (ath_is_49ghz_allowed(caps->cap_eeprom.ee_regdomain))
+                                caps->cap_range.range_5ghz_min = 4920;
+                        else
+                                caps->cap_range.range_5ghz_min = 5005;
                         caps->cap_range.range_5ghz_max = 6100;
 
                         /* Set supported modes */