diff options
Diffstat (limited to 'drivers/net/wireless/ath9k/virtual.c')
| -rw-r--r-- | drivers/net/wireless/ath9k/virtual.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath9k/virtual.c b/drivers/net/wireless/ath9k/virtual.c index 6122f48f25fb..913d2043d23e 100644 --- a/drivers/net/wireless/ath9k/virtual.c +++ b/drivers/net/wireless/ath9k/virtual.c @@ -432,6 +432,18 @@ int ath9k_wiphy_unpause(struct ath_wiphy *aphy) return ret; } +static void __ath9k_wiphy_mark_all_paused(struct ath_softc *sc) +{ + int i; + if (sc->pri_wiphy->state != ATH_WIPHY_INACTIVE) + sc->pri_wiphy->state = ATH_WIPHY_PAUSED; + for (i = 0; i < sc->num_sec_wiphy; i++) { + if (sc->sec_wiphy[i] && + sc->sec_wiphy[i]->state != ATH_WIPHY_INACTIVE) + sc->sec_wiphy[i]->state = ATH_WIPHY_PAUSED; + } +} + /* caller must hold wiphy_lock */ static void __ath9k_wiphy_pause_all(struct ath_softc *sc) { @@ -452,9 +464,34 @@ int ath9k_wiphy_select(struct ath_wiphy *aphy) spin_lock_bh(&sc->wiphy_lock); if (__ath9k_wiphy_pausing(sc)) { + if (sc->wiphy_select_failures == 0) + sc->wiphy_select_first_fail = jiffies; + sc->wiphy_select_failures++; + if (time_after(jiffies, sc->wiphy_select_first_fail + HZ / 2)) + { + printk(KERN_DEBUG "ath9k: Previous wiphy select timed " + "out; disable/enable hw to recover\n"); + __ath9k_wiphy_mark_all_paused(sc); + /* + * TODO: this workaround to fix hardware is unlikely to + * be specific to virtual wiphy changes. It can happen + * on normal channel change, too, and as such, this + * should really be made more generic. For example, + * tricker radio disable/enable on GTT interrupt burst + * (say, 10 GTT interrupts received without any TX + * frame being completed) + */ + spin_unlock_bh(&sc->wiphy_lock); + ath_radio_disable(sc); + ath_radio_enable(sc); + queue_work(aphy->sc->hw->workqueue, + &aphy->sc->chan_work); + return -EBUSY; /* previous select still in progress */ + } spin_unlock_bh(&sc->wiphy_lock); return -EBUSY; /* previous select still in progress */ } + sc->wiphy_select_failures = 0; /* Store the new channel */ sc->chan_idx = aphy->chan_idx; |