ath5k: Use helper function to get eeprom mode from channel

Introduce a helper function to get the EEPROM mode from channel and remove
multiple similar switch statements. Also since it's now easy to get the EEPROM
mode from the channel, use them inside the functions which need it, instead of
passing a redundant ee_mode parameter.

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

1 files changed, 16 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath/ath5k/eeprom.c b/drivers/net/wireless/ath/ath5k/eeprom.c
index 97eaa9a4415..80e625608ba 100644
--- a/drivers/net/wireless/ath/ath5k/eeprom.c
+++ b/drivers/net/wireless/ath/ath5k/eeprom.c
@@ -1802,3 +1802,19 @@ ath5k_eeprom_detach(struct ath5k_hw *ah)
         for (mode = AR5K_EEPROM_MODE_11A; mode <= AR5K_EEPROM_MODE_11G; mode++)
                 ath5k_eeprom_free_pcal_info(ah, mode);
 }
+
+int
+ath5k_eeprom_mode_from_channel(struct ieee80211_channel *channel)
+{
+        switch (channel->hw_value & CHANNEL_MODES) {
+        case CHANNEL_A:
+        case CHANNEL_XR:
+                return AR5K_EEPROM_MODE_11A;
+        case CHANNEL_G:
+                return AR5K_EEPROM_MODE_11G;
+        case CHANNEL_B:
+                return AR5K_EEPROM_MODE_11B;
+        default:
+                return -1;
+        }
+}