ath9k_hw: optimize interrupt mask changes

OProfile showed that ath9k was spending way too much time in
ath9k_hw_set_interrupts. Since most of the interrupt mask changes only
need to globally enable/disable interrupts, it makes sense to split
this part into separate functions, replacing all calls to
ath9k_hw_set_interrupts(ah, 0) with ath9k_hw_disable_interrupts(ah).

ath9k_hw_set_interrupts(ah, ah->imask) only gets changed to
ath9k_hw_enable_interrupts(ah), whenever ah->imask was not changed
since the point where interrupts were disabled.

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

1 files changed, 9 insertions, 9 deletions

diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index b52f1cf8a60..ade9d7c1603 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -239,7 +239,7 @@ int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
          * hardware at the new frequency, and then re-enable
          * the relevant bits of the h/w.
          */
-        ath9k_hw_set_interrupts(ah, 0);
+        ath9k_hw_disable_interrupts(ah);
         ath_drain_all_txq(sc, false);
 
         spin_lock_bh(&sc->rx.pcu_lock);
@@ -653,7 +653,7 @@ void ath9k_tasklet(unsigned long data)
                         ath_gen_timer_isr(sc->sc_ah);
 
         /* re-enable hardware interrupt */
-        ath9k_hw_set_interrupts(ah, ah->imask);
+        ath9k_hw_enable_interrupts(ah);
         ath9k_ps_restore(sc);
 }
 
@@ -752,7 +752,7 @@ irqreturn_t ath_isr(int irq, void *dev)
                  * interrupt; otherwise it will continue to
                  * fire.
                  */
-                ath9k_hw_set_interrupts(ah, 0);
+                ath9k_hw_disable_interrupts(ah);
                 /*
                  * Let the hal handle the event. We assume
                  * it will clear whatever condition caused
@@ -761,7 +761,7 @@ irqreturn_t ath_isr(int irq, void *dev)
                 spin_lock(&common->cc_lock);
                 ath9k_hw_proc_mib_event(ah);
                 spin_unlock(&common->cc_lock);
-                ath9k_hw_set_interrupts(ah, ah->imask);
+                ath9k_hw_enable_interrupts(ah);
         }
 
         if (!(ah->caps.hw_caps & ATH9K_HW_CAP_AUTOSLEEP))
@@ -778,8 +778,8 @@ chip_reset:
         ath_debug_stat_interrupt(sc, status);
 
         if (sched) {
-                /* turn off every interrupt except SWBA */
-                ath9k_hw_set_interrupts(ah, (ah->imask & ATH9K_INT_SWBA));
+                /* turn off every interrupt */
+                ath9k_hw_disable_interrupts(ah);
                 tasklet_schedule(&sc->intr_tq);
         }
 
@@ -937,7 +937,7 @@ void ath_radio_disable(struct ath_softc *sc, struct ieee80211_hw *hw)
         }
 
         /* Disable interrupts */
-        ath9k_hw_set_interrupts(ah, 0);
+        ath9k_hw_disable_interrupts(ah);
 
         ath_drain_all_txq(sc, false);   /* clear pending tx frames */
 
@@ -980,7 +980,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx)
 
         ieee80211_stop_queues(hw);
 
-        ath9k_hw_set_interrupts(ah, 0);
+        ath9k_hw_disable_interrupts(ah);
         ath_drain_all_txq(sc, retry_tx);
 
         spin_lock_bh(&sc->rx.pcu_lock);
@@ -1394,7 +1394,7 @@ static void ath9k_stop(struct ieee80211_hw *hw)
 
         /* make sure h/w will not generate any interrupt
          * before setting the invalid flag. */
-        ath9k_hw_set_interrupts(ah, 0);
+        ath9k_hw_disable_interrupts(ah);
 
         spin_lock_bh(&sc->rx.pcu_lock);
         if (!(sc->sc_flags & SC_OP_INVALID)) {