ath9k_hw: make bluetooth coexistence support optional at compile time

Many systems (e.g. embedded systems) do not have wifi modules connected to
bluetooth modules, so bluetooth coexistence is irrelevant there. With the
addition of MCI support, ath9k picked up quite a bit of extra code that
can be compiled out this way.

This patch redefines ATH9K_HW_CAP_MCI and adds an inline wrapper for
querying the bluetooth coexistence scheme, allowing the compiler to
eliminate code that uses it, with only very little use of #ifdef.

On MIPS this reduces the total size for the modules by about 20k.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/net/wireless/ath/ath9k/init.c b/drivers/net/wireless/ath/ath9k/init.c
index 58ce67f976f9..abf943557dee 100644
--- a/drivers/net/wireless/ath/ath9k/init.c
+++ b/drivers/net/wireless/ath/ath9k/init.c
@@ -425,7 +425,7 @@ static int ath9k_init_btcoex(struct ath_softc *sc)
         struct ath_hw *ah = sc->sc_ah;
         int r;
 
-        switch (sc->sc_ah->btcoex_hw.scheme) {
+        switch (ath9k_hw_get_btcoex_scheme(sc->sc_ah)) {
         case ATH_BTCOEX_CFG_NONE:
                 break;
         case ATH_BTCOEX_CFG_2WIRE:
@@ -880,10 +880,10 @@ static void ath9k_deinit_softc(struct ath_softc *sc)
                 kfree(sc->sbands[IEEE80211_BAND_5GHZ].channels);
 
         if ((sc->btcoex.no_stomp_timer) &&
-            sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_3WIRE)
+            ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_3WIRE)
                 ath_gen_timer_free(sc->sc_ah, sc->btcoex.no_stomp_timer);
 
-        if (sc->sc_ah->btcoex_hw.scheme == ATH_BTCOEX_CFG_MCI)
+        if (ath9k_hw_get_btcoex_scheme(sc->sc_ah) == ATH_BTCOEX_CFG_MCI)
                 ath_mci_cleanup(sc);
 
         for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)