From b037b693265e5c83ddc3f003a713d19b9832bf24 Mon Sep 17 00:00:00 2001 From: Rajkumar Manoharan Date: Fri, 5 Aug 2011 18:59:40 +0530 Subject: [PATCH] ath9k: do not enable interrupt on set interrupt mask At preset set_interrupt also enables interrupt after changing mask. This is not necessary in all cases and also sometime it breaks the assumption that interrupt was disabled. So let us enable the interrupt explicity if it was disabled earlier. This could also avoid unnecessary register ops and also helps the follow up patch to have global ref count for interrupts ops. Signed-off-by: Rajkumar Manoharan Signed-off-by: John W. Linville --- drivers/net/wireless/ath/ath9k/beacon.c | 9 +++++++-- drivers/net/wireless/ath/ath9k/gpio.c | 2 ++ drivers/net/wireless/ath/ath9k/mac.c | 3 --- drivers/net/wireless/ath/ath9k/main.c | 4 ++++ 4 files changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c index 0d13ff74a68b..f1d66abc367f 100644 --- a/drivers/net/wireless/ath/ath9k/beacon.c +++ b/drivers/net/wireless/ath/ath9k/beacon.c @@ -522,6 +522,7 @@ static void ath_beacon_config_ap(struct ath_softc *sc, ath9k_beacon_init(sc, nexttbtt, intval); sc->beacon.bmisscnt = 0; ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); } /* @@ -652,8 +653,10 @@ static void ath_beacon_config_sta(struct ath_softc *sc, * If the beacon config is called beacause of TSFOOR, * Interrupts will be enabled back at the end of ath9k_tasklet */ - if (!(sc->ps_flags & PS_TSFOOR_SYNC)) + if (!(sc->ps_flags & PS_TSFOOR_SYNC)) { ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); + } } static void ath_beacon_config_adhoc(struct ath_softc *sc, @@ -691,8 +694,10 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc, * If the beacon config is called beacause of TSFOOR, * Interrupts will be enabled back at the end of ath9k_tasklet */ - if (!(sc->ps_flags & PS_TSFOOR_SYNC)) + if (!(sc->ps_flags & PS_TSFOOR_SYNC)) { ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); + } } static bool ath9k_allow_beacon_config(struct ath_softc *sc, diff --git a/drivers/net/wireless/ath/ath9k/gpio.c b/drivers/net/wireless/ath/ath9k/gpio.c index bc713fc28191..5113dd80c99f 100644 --- a/drivers/net/wireless/ath/ath9k/gpio.c +++ b/drivers/net/wireless/ath/ath9k/gpio.c @@ -149,6 +149,7 @@ static void ath9k_gen_timer_start(struct ath_hw *ah, ath9k_hw_disable_interrupts(ah); ah->imask |= ATH9K_INT_GENTIMER; ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); } } @@ -163,6 +164,7 @@ static void ath9k_gen_timer_stop(struct ath_hw *ah, struct ath_gen_timer *timer) ath9k_hw_disable_interrupts(ah); ah->imask &= ~ATH9K_INT_GENTIMER; ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); } } diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c index b6b523a897e5..c3af61e38bd5 100644 --- a/drivers/net/wireless/ath/ath9k/mac.c +++ b/drivers/net/wireless/ath/ath9k/mac.c @@ -929,9 +929,6 @@ void ath9k_hw_set_interrupts(struct ath_hw *ah, enum ath9k_int ints) REG_CLR_BIT(ah, AR_IMR_S5, AR_IMR_S5_TIM_TIMER); } - if (ints & ATH9K_INT_GLOBAL) - ath9k_hw_enable_interrupts(ah); - return; } EXPORT_SYMBOL(ath9k_hw_set_interrupts); diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c index b602447b0a88..3050d83673b2 100644 --- a/drivers/net/wireless/ath/ath9k/main.c +++ b/drivers/net/wireless/ath/ath9k/main.c @@ -294,6 +294,7 @@ static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw, ath9k_cmn_update_txpow(ah, sc->curtxpow, sc->config.txpowlimit, &sc->curtxpow); ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); if (!(sc->sc_flags & (SC_OP_OFFCHANNEL))) { if (sc->sc_flags & SC_OP_BEACONS) @@ -910,6 +911,7 @@ static void ath_radio_enable(struct ath_softc *sc, struct ieee80211_hw *hw) /* Re-Enable interrupts */ ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); /* Enable LED */ ath9k_hw_cfg_output(ah, ah->led_pin, @@ -1016,6 +1018,7 @@ int ath_reset(struct ath_softc *sc, bool retry_tx) ath_set_beacon(sc); /* restart beacons */ ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); if (retry_tx) { int i; @@ -1130,6 +1133,7 @@ static int ath9k_start(struct ieee80211_hw *hw) /* Disable BMISS interrupt when we're not associated */ ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS); ath9k_hw_set_interrupts(ah, ah->imask); + ath9k_hw_enable_interrupts(ah); ieee80211_wake_queues(hw);