ath5k: cleanup ath5k_hw struct

ah_gpios array isn't used, and ah_current_channel can be a pointer
instead of an embedded struct.  Removing these and some other
write-only variables, and moving some things around for better
packing and cache utilization saves 116 bytes.

   text	   data	    bss	    dec	    hex	filename
 121762	    472	     64	 122298	  1ddba	ath5k_before.ko
 121646	    472	     64	 122182	  1dd46	ath5k.ko

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

3 files changed, 10 insertions, 19 deletions

diff --git a/drivers/net/wireless/ath/ath5k/ath5k.h b/drivers/net/wireless/ath/ath5k/ath5k.h
index 6358233bac9..91375113916 100644
--- a/drivers/net/wireless/ath/ath5k/ath5k.h
+++ b/drivers/net/wireless/ath/ath5k/ath5k.h
@@ -713,8 +713,8 @@ struct ath5k_gain {
  * Used internaly for reset_tx_queue).
  * Also see struct struct ieee80211_channel.
  */
-#define IS_CHAN_XR(_c)  ((_c.hw_value & CHANNEL_XR) != 0)
-#define IS_CHAN_B(_c)   ((_c.hw_value & CHANNEL_B) != 0)
+#define IS_CHAN_XR(_c)  ((_c->hw_value & CHANNEL_XR) != 0)
+#define IS_CHAN_B(_c)   ((_c->hw_value & CHANNEL_B) != 0)
 
 /*
  * The following structure is used to map 2GHz channels to
@@ -1029,14 +1029,15 @@ struct ath5k_hw {
         enum ath5k_int          ah_imr;
 
         enum nl80211_iftype     ah_op_mode;
-        enum ath5k_power_mode   ah_power_mode;
-        struct ieee80211_channel ah_current_channel;
+        struct ieee80211_channel *ah_current_channel;
         bool                    ah_turbo;
         bool                    ah_calibration;
-        bool                    ah_running;
         bool                    ah_single_chip;
         bool                    ah_combined_mic;
 
+        enum ath5k_version      ah_version;
+        enum ath5k_radio        ah_radio;
+        u32                     ah_phy;
         u32                     ah_mac_srev;
         u16                     ah_mac_version;
         u16                     ah_mac_revision;
@@ -1044,13 +1045,6 @@ struct ath5k_hw {
         u16                     ah_radio_5ghz_revision;
         u16                     ah_radio_2ghz_revision;
 
-        enum ath5k_version      ah_version;
-        enum ath5k_radio        ah_radio;
-        u32                     ah_phy;
-
-        bool                    ah_5ghz;
-        bool                    ah_2ghz;
-
 #define ah_modes                ah_capabilities.cap_mode
 #define ah_ee_version           ah_capabilities.cap_eeprom.ee_version
 
@@ -1058,7 +1052,6 @@ struct ath5k_hw {
         u32                     ah_aifs;
         u32                     ah_cw_min;
         u32                     ah_cw_max;
-        bool                    ah_software_retry;
         u32                     ah_limit_tx_retries;
 
         /* Antenna Control */
@@ -1066,6 +1059,7 @@ struct ath5k_hw {
         u8                      ah_ant_mode;
         u8                      ah_tx_ant;
         u8                      ah_def_ant;
+        bool                    ah_software_retry;
 
         u8                      ah_sta_id[ETH_ALEN];
 
@@ -1075,7 +1069,6 @@ struct ath5k_hw {
         u8                      ah_bssid[ETH_ALEN];
         u8                      ah_bssid_mask[ETH_ALEN];
 
-        u32                     ah_gpio[AR5K_MAX_GPIO];
         int                     ah_gpio_npins;
 
         struct ath_regulatory   ah_regulatory;
diff --git a/drivers/net/wireless/ath/ath5k/phy.c b/drivers/net/wireless/ath/ath5k/phy.c
index a876ca8d69e..2075ba99396 100644
--- a/drivers/net/wireless/ath/ath5k/phy.c
+++ b/drivers/net/wireless/ath/ath5k/phy.c
@@ -1085,8 +1085,7 @@ int ath5k_hw_channel(struct ath5k_hw *ah, struct ieee80211_channel *channel)
                                 AR5K_PHY_CCKTXCTL_WORLD);
         }
 
-        ah->ah_current_channel.center_freq = channel->center_freq;
-        ah->ah_current_channel.hw_value = channel->hw_value;
+        ah->ah_current_channel = channel;
         ah->ah_turbo = channel->hw_value == CHANNEL_T ? true : false;
 
         return 0;
@@ -1731,7 +1730,7 @@ ath5k_hw_set_fast_div(struct ath5k_hw *ah, u8 ee_mode, bool enable)
 void
 ath5k_hw_set_antenna_mode(struct ath5k_hw *ah, u8 ant_mode)
 {
-        struct ieee80211_channel *channel = &ah->ah_current_channel;
+        struct ieee80211_channel *channel = ah->ah_current_channel;
         bool use_def_for_tx, update_def_on_tx, use_def_for_rts, fast_div;
         bool use_def_for_sg;
         u8 def_ant, tx_ant, ee_mode;
@@ -3011,7 +3010,7 @@ ath5k_hw_txpower(struct ath5k_hw *ah, struct ieee80211_channel *channel,
 int ath5k_hw_set_txpower_limit(struct ath5k_hw *ah, u8 txpower)
 {
         /*Just a try M.F.*/
-        struct ieee80211_channel *channel = &ah->ah_current_channel;
+        struct ieee80211_channel *channel = ah->ah_current_channel;
         u8 ee_mode;
 
         ATH5K_TRACE(ah->ah_sc);
diff --git a/drivers/net/wireless/ath/ath5k/reset.c b/drivers/net/wireless/ath/ath5k/reset.c
index bd0a97a38d3..86733fdb477 100644
--- a/drivers/net/wireless/ath/ath5k/reset.c
+++ b/drivers/net/wireless/ath/ath5k/reset.c
@@ -290,7 +290,6 @@ int ath5k_hw_set_power(struct ath5k_hw *ah, enum ath5k_power_mode mode,
         }
 
 commit:
-        ah->ah_power_mode = mode;
         ath5k_hw_reg_write(ah, staid, AR5K_STA_ID1);
 
         return 0;