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git://projects.qi-hardware.com/openwrt-xburst.git
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ath9k: fix a few crash issues on hardware reset
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@28122 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nbd
parent
cd439b4056
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d8083fae30
253
package/mac80211/patches/581-ath9k_use_reset_work.patch
Normal file
253
package/mac80211/patches/581-ath9k_use_reset_work.patch
Normal file
@ -0,0 +1,253 @@
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -429,6 +429,7 @@ void ath9k_set_beaconing_status(struct a
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#define ATH_PAPRD_TIMEOUT 100 /* msecs */
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+void ath_reset_work(struct work_struct *work);
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void ath_hw_check(struct work_struct *work);
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void ath_hw_pll_work(struct work_struct *work);
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void ath_paprd_calibrate(struct work_struct *work);
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@@ -609,6 +610,7 @@ struct ath_softc {
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struct mutex mutex;
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struct work_struct paprd_work;
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struct work_struct hw_check_work;
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+ struct work_struct hw_reset_work;
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struct completion paprd_complete;
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unsigned int hw_busy_count;
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@@ -655,7 +657,6 @@ struct ath_softc {
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};
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void ath9k_tasklet(unsigned long data);
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-int ath_reset(struct ath_softc *sc, bool retry_tx);
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int ath_cabq_update(struct ath_softc *);
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static inline void ath_read_cachesize(struct ath_common *common, int *csz)
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--- a/drivers/net/wireless/ath/ath9k/init.c
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+++ b/drivers/net/wireless/ath/ath9k/init.c
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@@ -776,6 +776,7 @@ int ath9k_init_device(u16 devid, struct
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goto error_world;
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}
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+ INIT_WORK(&sc->hw_reset_work, ath_reset_work);
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INIT_WORK(&sc->hw_check_work, ath_hw_check);
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INIT_WORK(&sc->paprd_work, ath_paprd_calibrate);
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INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -595,74 +595,6 @@ static void ath_node_detach(struct ath_s
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ath_tx_node_cleanup(sc, an);
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}
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-void ath_hw_check(struct work_struct *work)
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-{
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- struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
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- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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- unsigned long flags;
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- int busy;
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-
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- ath9k_ps_wakeup(sc);
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- if (ath9k_hw_check_alive(sc->sc_ah))
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- goto out;
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-
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- spin_lock_irqsave(&common->cc_lock, flags);
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- busy = ath_update_survey_stats(sc);
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- spin_unlock_irqrestore(&common->cc_lock, flags);
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-
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- ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
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- "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
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- if (busy >= 99) {
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- if (++sc->hw_busy_count >= 3) {
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- spin_lock_bh(&sc->sc_pcu_lock);
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- ath_reset(sc, true);
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- spin_unlock_bh(&sc->sc_pcu_lock);
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- }
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- } else if (busy >= 0)
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- sc->hw_busy_count = 0;
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-
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-out:
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- ath9k_ps_restore(sc);
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-}
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-
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-static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
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-{
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- static int count;
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- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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-
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- if (pll_sqsum >= 0x40000) {
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- count++;
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- if (count == 3) {
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- /* Rx is hung for more than 500ms. Reset it */
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- ath_dbg(common, ATH_DBG_RESET,
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- "Possible RX hang, resetting");
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- spin_lock_bh(&sc->sc_pcu_lock);
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- ath_reset(sc, true);
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- spin_unlock_bh(&sc->sc_pcu_lock);
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- count = 0;
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- }
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- } else
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- count = 0;
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-}
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-
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-void ath_hw_pll_work(struct work_struct *work)
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-{
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- struct ath_softc *sc = container_of(work, struct ath_softc,
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- hw_pll_work.work);
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- u32 pll_sqsum;
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-
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- if (AR_SREV_9485(sc->sc_ah)) {
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-
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- ath9k_ps_wakeup(sc);
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- pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
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- ath9k_ps_restore(sc);
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-
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- ath_hw_pll_rx_hang_check(sc, pll_sqsum);
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-
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- ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
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- }
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-}
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-
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void ath9k_tasklet(unsigned long data)
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{
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@@ -675,9 +607,7 @@ void ath9k_tasklet(unsigned long data)
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if ((status & ATH9K_INT_FATAL) ||
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(status & ATH9K_INT_BB_WATCHDOG)) {
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- spin_lock(&sc->sc_pcu_lock);
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- ath_reset(sc, true);
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- spin_unlock(&sc->sc_pcu_lock);
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+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
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return;
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}
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@@ -968,7 +898,7 @@ void ath_radio_disable(struct ath_softc
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ath9k_ps_restore(sc);
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}
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-int ath_reset(struct ath_softc *sc, bool retry_tx)
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+static int ath_reset(struct ath_softc *sc, bool retry_tx)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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@@ -1035,6 +965,84 @@ int ath_reset(struct ath_softc *sc, bool
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return r;
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}
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+void ath_reset_work(struct work_struct *work)
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+{
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+ struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
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+
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+ spin_lock_bh(&sc->sc_pcu_lock);
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+ ath_reset(sc, true);
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+ spin_unlock_bh(&sc->sc_pcu_lock);
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+}
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+
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+void ath_hw_check(struct work_struct *work)
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+{
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+ struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
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+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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+ unsigned long flags;
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+ int busy;
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+
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+ ath9k_ps_wakeup(sc);
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+ if (ath9k_hw_check_alive(sc->sc_ah))
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+ goto out;
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+
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+ spin_lock_irqsave(&common->cc_lock, flags);
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+ busy = ath_update_survey_stats(sc);
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+ spin_unlock_irqrestore(&common->cc_lock, flags);
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+
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+ ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
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+ "busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
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+ if (busy >= 99) {
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+ if (++sc->hw_busy_count >= 3) {
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+ spin_lock_bh(&sc->sc_pcu_lock);
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+ ath_reset(sc, true);
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+ spin_unlock_bh(&sc->sc_pcu_lock);
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+ }
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+
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+ } else if (busy >= 0)
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+ sc->hw_busy_count = 0;
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+
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+out:
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+ ath9k_ps_restore(sc);
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+}
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+
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+static void ath_hw_pll_rx_hang_check(struct ath_softc *sc, u32 pll_sqsum)
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+{
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+ static int count;
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+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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+
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+ if (pll_sqsum >= 0x40000) {
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+ count++;
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+ if (count == 3) {
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+ /* Rx is hung for more than 500ms. Reset it */
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+ ath_dbg(common, ATH_DBG_RESET,
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+ "Possible RX hang, resetting");
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+ spin_lock_bh(&sc->sc_pcu_lock);
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+ ath_reset(sc, true);
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+ spin_unlock_bh(&sc->sc_pcu_lock);
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+ count = 0;
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+ }
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+ } else
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+ count = 0;
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+}
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+
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+void ath_hw_pll_work(struct work_struct *work)
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+{
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+ struct ath_softc *sc = container_of(work, struct ath_softc,
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+ hw_pll_work.work);
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+ u32 pll_sqsum;
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+
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+ if (AR_SREV_9485(sc->sc_ah)) {
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+
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+ ath9k_ps_wakeup(sc);
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+ pll_sqsum = ar9003_get_pll_sqsum_dvc(sc->sc_ah);
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+ ath9k_ps_restore(sc);
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+
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+ ath_hw_pll_rx_hang_check(sc, pll_sqsum);
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+
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+ ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
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+ }
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+}
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+
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/**********************/
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/* mac80211 callbacks */
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/**********************/
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--- a/drivers/net/wireless/ath/ath9k/xmit.c
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+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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@@ -601,7 +601,7 @@ static void ath_tx_complete_aggr(struct
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rcu_read_unlock();
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if (needreset)
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- ath_reset(sc, false);
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+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
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}
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static bool ath_lookup_legacy(struct ath_buf *bf)
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@@ -2268,9 +2268,7 @@ static void ath_tx_complete_poll_work(st
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if (needreset) {
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ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
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"tx hung, resetting the chip\n");
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- spin_lock_bh(&sc->sc_pcu_lock);
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- ath_reset(sc, true);
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- spin_unlock_bh(&sc->sc_pcu_lock);
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+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
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}
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ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
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--- a/drivers/net/wireless/ath/ath9k/beacon.c
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+++ b/drivers/net/wireless/ath/ath9k/beacon.c
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@@ -386,9 +386,7 @@ void ath_beacon_tasklet(unsigned long da
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ath_dbg(common, ATH_DBG_BSTUCK,
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"beacon is officially stuck\n");
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sc->sc_flags |= SC_OP_TSF_RESET;
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- spin_lock(&sc->sc_pcu_lock);
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- ath_reset(sc, true);
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- spin_unlock(&sc->sc_pcu_lock);
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+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
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}
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return;
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@ -1,6 +1,6 @@
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -212,83 +212,47 @@ static int ath_update_survey_stats(struc
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@@ -212,83 +212,57 @@ static int ath_update_survey_stats(struc
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return ret;
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}
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@ -11,33 +11,42 @@
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-*/
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-static int ath_set_channel(struct ath_softc *sc, struct ieee80211_hw *hw,
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- struct ath9k_channel *hchan)
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+static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
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+static void __ath_cancel_work(struct ath_softc *sc)
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{
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struct ath_hw *ah = sc->sc_ah;
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struct ath_common *common = ath9k_hw_common(ah);
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- struct ath_hw *ah = sc->sc_ah;
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- struct ath_common *common = ath9k_hw_common(ah);
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- struct ieee80211_conf *conf = &common->hw->conf;
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- bool fastcc = true, stopped;
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- struct ieee80211_channel *channel = hw->conf.channel;
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- struct ath9k_hw_cal_data *caldata = NULL;
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- int r;
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+ bool ret;
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-
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- if (sc->sc_flags & SC_OP_INVALID)
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- return -EIO;
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+ ieee80211_stop_queues(sc->hw);
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sc->hw_busy_count = 0;
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-
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del_timer_sync(&common->ani.timer);
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- sc->hw_busy_count = 0;
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-
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- del_timer_sync(&common->ani.timer);
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cancel_work_sync(&sc->paprd_work);
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cancel_work_sync(&sc->hw_check_work);
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cancel_delayed_work_sync(&sc->tx_complete_work);
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cancel_delayed_work_sync(&sc->hw_pll_work);
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+}
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- ath9k_ps_wakeup(sc);
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-
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+static void ath_cancel_work(struct ath_softc *sc)
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+{
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+ __ath_cancel_work(sc);
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+ cancel_work_sync(&sc->hw_reset_work);
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+}
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- spin_lock_bh(&sc->sc_pcu_lock);
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-
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+static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
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+{
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+ struct ath_hw *ah = sc->sc_ah;
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+ struct ath_common *common = ath9k_hw_common(ah);
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+ bool ret;
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- /*
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- * This is only performed if the channel settings have
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- * actually changed.
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@ -47,20 +56,24 @@
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- * hardware at the new frequency, and then re-enable
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- * the relevant bits of the h/w.
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- */
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ath9k_hw_disable_interrupts(ah);
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- ath9k_hw_disable_interrupts(ah);
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- stopped = ath_drain_all_txq(sc, false);
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-
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+ ieee80211_stop_queues(sc->hw);
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- if (!ath_stoprecv(sc))
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- stopped = false;
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+ sc->hw_busy_count = 0;
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+ del_timer_sync(&common->ani.timer);
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- if (!ath9k_hw_check_alive(ah))
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- stopped = false;
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+ ret = ath_drain_all_txq(sc, retry_tx);
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+ ath9k_hw_disable_interrupts(ah);
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- /* XXX: do not flush receive queue here. We don't want
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- * to flush data frames already in queue because of
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- * changing channel. */
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-
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+ ret = ath_drain_all_txq(sc, retry_tx);
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- if (!stopped || !(sc->sc_flags & SC_OP_OFFCHANNEL))
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- fastcc = false;
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+ if (!ath_stoprecv(sc))
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@ -104,7 +117,7 @@
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}
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ath9k_cmn_update_txpow(ah, sc->curtxpow,
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@@ -296,21 +260,89 @@ static int ath_set_channel(struct ath_so
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@@ -296,21 +270,93 @@ static int ath_set_channel(struct ath_so
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ath9k_hw_set_interrupts(ah, ah->imask);
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ath9k_hw_enable_interrupts(ah);
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@ -136,6 +149,10 @@
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+ bool flush = false;
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+ int r;
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+
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+ __ath_cancel_work(sc);
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+
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+ spin_lock_bh(&sc->sc_pcu_lock);
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+ if (!(sc->sc_flags & SC_OP_OFFCHANNEL)) {
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+ fastcc = false;
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+ caldata = &sc->caldata;
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@ -163,12 +180,14 @@
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+ if (r) {
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+ ath_err(common,
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+ "Unable to reset channel, reset status %d\n", r);
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+ return r;
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+ goto out;
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+ }
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+
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+ if (!ath_complete_reset(sc, true))
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+ return -EIO;
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+ r = -EIO;
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+
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+out:
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spin_unlock_bh(&sc->sc_pcu_lock);
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+ return 0;
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+}
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+
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@ -182,22 +201,20 @@
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+ struct ath9k_channel *hchan)
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+{
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+ int r;
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+
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+ if (sc->sc_flags & SC_OP_INVALID)
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+ return -EIO;
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+
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+ ath9k_ps_wakeup(sc);
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+
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+ spin_lock_bh(&sc->sc_pcu_lock);
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+ r = ath_reset_internal(sc, hchan, false);
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spin_unlock_bh(&sc->sc_pcu_lock);
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ath9k_ps_restore(sc);
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+
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return r;
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}
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@@ -893,28 +925,13 @@ static void ath_radio_enable(struct ath_
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@@ -823,28 +869,13 @@ static void ath_radio_enable(struct ath_
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channel->center_freq, r);
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}
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@ -227,20 +244,21 @@
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spin_unlock_bh(&sc->sc_pcu_lock);
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ath9k_ps_restore(sc);
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@@ -927,12 +944,8 @@ void ath_radio_disable(struct ath_softc
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@@ -857,11 +888,10 @@ void ath_radio_disable(struct ath_softc
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int r;
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ath9k_ps_wakeup(sc);
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- cancel_delayed_work_sync(&sc->hw_pll_work);
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-
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spin_lock_bh(&sc->sc_pcu_lock);
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- spin_lock_bh(&sc->sc_pcu_lock);
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+ ath_cancel_work(sc);
|
||||
|
||||
- ieee80211_stop_queues(hw);
|
||||
-
|
||||
+ spin_lock_bh(&sc->sc_pcu_lock);
|
||||
|
||||
/*
|
||||
* Keep the LED on when the radio is disabled
|
||||
* during idle unassociated state.
|
||||
@@ -942,13 +955,7 @@ void ath_radio_disable(struct ath_softc
|
||||
@@ -872,13 +902,7 @@ void ath_radio_disable(struct ath_softc
|
||||
ath9k_hw_cfg_gpio_input(ah, ah->led_pin);
|
||||
}
|
||||
|
||||
@ -255,9 +273,9 @@
|
||||
|
||||
if (!ah->curchan)
|
||||
ah->curchan = ath9k_cmn_get_curchannel(hw, ah);
|
||||
@@ -970,48 +977,11 @@ void ath_radio_disable(struct ath_softc
|
||||
@@ -900,48 +924,11 @@ void ath_radio_disable(struct ath_softc
|
||||
|
||||
int ath_reset(struct ath_softc *sc, bool retry_tx)
|
||||
static int ath_reset(struct ath_softc *sc, bool retry_tx)
|
||||
{
|
||||
- struct ath_hw *ah = sc->sc_ah;
|
||||
- struct ath_common *common = ath9k_hw_common(ah);
|
||||
@ -305,7 +323,7 @@
|
||||
|
||||
if (retry_tx) {
|
||||
int i;
|
||||
@@ -1024,12 +994,6 @@ int ath_reset(struct ath_softc *sc, bool
|
||||
@@ -954,12 +941,6 @@ static int ath_reset(struct ath_softc *s
|
||||
}
|
||||
}
|
||||
|
||||
@ -318,7 +336,42 @@
|
||||
ath9k_ps_restore(sc);
|
||||
|
||||
return r;
|
||||
@@ -1081,28 +1045,6 @@ static int ath9k_start(struct ieee80211_
|
||||
@@ -969,9 +950,7 @@ void ath_reset_work(struct work_struct *
|
||||
{
|
||||
struct ath_softc *sc = container_of(work, struct ath_softc, hw_check_work);
|
||||
|
||||
- spin_lock_bh(&sc->sc_pcu_lock);
|
||||
ath_reset(sc, true);
|
||||
- spin_unlock_bh(&sc->sc_pcu_lock);
|
||||
}
|
||||
|
||||
void ath_hw_check(struct work_struct *work)
|
||||
@@ -992,11 +971,8 @@ void ath_hw_check(struct work_struct *wo
|
||||
ath_dbg(common, ATH_DBG_RESET, "Possible baseband hang, "
|
||||
"busy=%d (try %d)\n", busy, sc->hw_busy_count + 1);
|
||||
if (busy >= 99) {
|
||||
- if (++sc->hw_busy_count >= 3) {
|
||||
- spin_lock_bh(&sc->sc_pcu_lock);
|
||||
- ath_reset(sc, true);
|
||||
- spin_unlock_bh(&sc->sc_pcu_lock);
|
||||
- }
|
||||
+ if (++sc->hw_busy_count >= 3)
|
||||
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
||||
|
||||
} else if (busy >= 0)
|
||||
sc->hw_busy_count = 0;
|
||||
@@ -1016,9 +992,7 @@ static void ath_hw_pll_rx_hang_check(str
|
||||
/* Rx is hung for more than 500ms. Reset it */
|
||||
ath_dbg(common, ATH_DBG_RESET,
|
||||
"Possible RX hang, resetting");
|
||||
- spin_lock_bh(&sc->sc_pcu_lock);
|
||||
- ath_reset(sc, true);
|
||||
- spin_unlock_bh(&sc->sc_pcu_lock);
|
||||
+ ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
|
||||
count = 0;
|
||||
}
|
||||
} else
|
||||
@@ -1089,28 +1063,6 @@ static int ath9k_start(struct ieee80211_
|
||||
goto mutex_unlock;
|
||||
}
|
||||
|
||||
@ -347,7 +400,7 @@
|
||||
/* Setup our intr mask. */
|
||||
ah->imask = ATH9K_INT_TX | ATH9K_INT_RXEOL |
|
||||
ATH9K_INT_RXORN | ATH9K_INT_FATAL |
|
||||
@@ -1125,12 +1067,14 @@ static int ath9k_start(struct ieee80211_
|
||||
@@ -1133,12 +1085,14 @@ static int ath9k_start(struct ieee80211_
|
||||
|
||||
/* Disable BMISS interrupt when we're not associated */
|
||||
ah->imask &= ~(ATH9K_INT_SWBA | ATH9K_INT_BMISS);
|
||||
@ -366,3 +419,28 @@
|
||||
|
||||
if ((ah->btcoex_hw.scheme != ATH_BTCOEX_CFG_NONE) &&
|
||||
!ah->btcoex_hw.enabled) {
|
||||
@@ -1231,10 +1185,7 @@ static void ath9k_stop(struct ieee80211_
|
||||
|
||||
mutex_lock(&sc->mutex);
|
||||
|
||||
- cancel_delayed_work_sync(&sc->tx_complete_work);
|
||||
- cancel_delayed_work_sync(&sc->hw_pll_work);
|
||||
- cancel_work_sync(&sc->paprd_work);
|
||||
- cancel_work_sync(&sc->hw_check_work);
|
||||
+ ath_cancel_work(sc);
|
||||
|
||||
if (sc->sc_flags & SC_OP_INVALID) {
|
||||
ath_dbg(common, ATH_DBG_ANY, "Device not present\n");
|
||||
@@ -2351,9 +2302,11 @@ static void ath9k_flush(struct ieee80211
|
||||
ath9k_ps_wakeup(sc);
|
||||
spin_lock_bh(&sc->sc_pcu_lock);
|
||||
drain_txq = ath_drain_all_txq(sc, false);
|
||||
+ spin_unlock_bh(&sc->sc_pcu_lock);
|
||||
+
|
||||
if (!drain_txq)
|
||||
ath_reset(sc, false);
|
||||
- spin_unlock_bh(&sc->sc_pcu_lock);
|
||||
+
|
||||
ath9k_ps_restore(sc);
|
||||
ieee80211_wake_queues(hw);
|
||||
|
||||
@ -57,7 +57,7 @@
|
||||
}
|
||||
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
|
||||
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
|
||||
@@ -652,6 +652,7 @@ struct ath_softc {
|
||||
@@ -654,6 +654,7 @@ struct ath_softc {
|
||||
struct ath_descdma txsdma;
|
||||
|
||||
struct ath_ant_comb ant_comb;
|
||||
@ -65,7 +65,7 @@
|
||||
};
|
||||
|
||||
void ath9k_tasklet(unsigned long data);
|
||||
@@ -673,6 +674,7 @@ int ath9k_init_device(u16 devid, struct
|
||||
@@ -674,6 +675,7 @@ int ath9k_init_device(u16 devid, struct
|
||||
const struct ath_bus_ops *bus_ops);
|
||||
void ath9k_deinit_device(struct ath_softc *sc);
|
||||
void ath9k_set_hw_capab(struct ath_softc *sc, struct ieee80211_hw *hw);
|
||||
@ -75,7 +75,7 @@
|
||||
bool ath9k_uses_beacons(int type);
|
||||
--- a/drivers/net/wireless/ath/ath9k/main.c
|
||||
+++ b/drivers/net/wireless/ath/ath9k/main.c
|
||||
@@ -270,6 +270,22 @@ static bool ath_complete_reset(struct at
|
||||
@@ -280,6 +280,22 @@ static bool ath_complete_reset(struct at
|
||||
ath_start_ani(common);
|
||||
}
|
||||
|
||||
@ -98,7 +98,7 @@
|
||||
ieee80211_wake_queues(sc->hw);
|
||||
|
||||
return true;
|
||||
@@ -2366,6 +2382,59 @@ static int ath9k_get_stats(struct ieee80
|
||||
@@ -2383,6 +2399,59 @@ static int ath9k_get_stats(struct ieee80
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -158,7 +158,7 @@
|
||||
struct ieee80211_ops ath9k_ops = {
|
||||
.tx = ath9k_tx,
|
||||
.start = ath9k_start,
|
||||
@@ -2392,4 +2461,6 @@ struct ieee80211_ops ath9k_ops = {
|
||||
@@ -2409,4 +2478,6 @@ struct ieee80211_ops ath9k_ops = {
|
||||
.tx_frames_pending = ath9k_tx_frames_pending,
|
||||
.tx_last_beacon = ath9k_tx_last_beacon,
|
||||
.get_stats = ath9k_get_stats,
|
||||
Loading…
Reference in New Issue
Block a user