From: Franky Lin Date: Fri, 23 Sep 2011 00:07:44 +0000 (-0700) Subject: staging: brcm80211: remove event handler thread from fullmac X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6a5e1e00bad78c567626a24c57f66314ec6a3a92;p=openwrt%2Fstaging%2Fblogic.git staging: brcm80211: remove event handler thread from fullmac Use work queue to defer cfg80211 event handle jobs Reviewed-by: Roland Vossen Reviewed-by: Pieter-Paul Giesberts Reviewed-by: Arend van Spriel Signed-off-by: Franky Lin Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c index 5e86e21adca4..2dd28a240bd5 100644 --- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c +++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c @@ -3248,69 +3248,30 @@ static void brcmf_put_event(struct brcmf_cfg80211_event_q *e) kfree(e); } -static s32 brcmf_event_handler(void *data) +static void brcmf_cfg80211_event_handler(struct work_struct *work) { struct brcmf_cfg80211_priv *cfg_priv = - (struct brcmf_cfg80211_priv *)data; - struct sched_param param = {.sched_priority = MAX_RT_PRIO - 1 }; + container_of(work, struct brcmf_cfg80211_priv, + event_work); struct brcmf_cfg80211_event_q *e; - DECLARE_WAITQUEUE(wait, current); - sched_setscheduler(current, SCHED_FIFO, ¶m); - allow_signal(SIGTERM); - add_wait_queue(&cfg_priv->event_waitq, &wait); - while (1) { - prepare_to_wait(&cfg_priv->event_waitq, &wait, - TASK_INTERRUPTIBLE); - - schedule(); - - if (kthread_should_stop()) - break; - - e = brcmf_deq_event(cfg_priv); - if (unlikely(!e)) { - WL_ERR("event queue empty...\n"); - continue; - } - - do { - WL_INFO("event type (%d)\n", e->etype); - if (cfg_priv->el.handler[e->etype]) - cfg_priv->el.handler[e->etype](cfg_priv, - cfg_to_ndev(cfg_priv), - &e->emsg, e->edata); - else - WL_INFO("Unknown Event (%d): ignoring\n", - e->etype); - brcmf_put_event(e); - } while ((e = brcmf_deq_event(cfg_priv))); + e = brcmf_deq_event(cfg_priv); + if (unlikely(!e)) { + WL_ERR("event queue empty...\n"); + return; } - finish_wait(&cfg_priv->event_waitq, &wait); - WL_INFO("was terminated\n"); - return 0; -} -static s32 brcmf_create_event_handler(struct brcmf_cfg80211_priv *cfg_priv) -{ - init_waitqueue_head(&cfg_priv->event_waitq); - cfg_priv->event_tsk = kthread_run(brcmf_event_handler, cfg_priv, - "wl_event_handler"); - if (IS_ERR(cfg_priv->event_tsk)) { - cfg_priv->event_tsk = NULL; - WL_ERR("failed to create event thread\n"); - return -ENOMEM; - } - return 0; -} + do { + WL_INFO("event type (%d)\n", e->etype); + if (cfg_priv->el.handler[e->etype]) + cfg_priv->el.handler[e->etype](cfg_priv, + cfg_to_ndev(cfg_priv), + &e->emsg, e->edata); + else + WL_INFO("Unknown Event (%d): ignoring\n", e->etype); + brcmf_put_event(e); + } while ((e = brcmf_deq_event(cfg_priv))); -static void brcmf_destroy_event_handler(struct brcmf_cfg80211_priv *cfg_priv) -{ - if (cfg_priv->event_tsk) { - send_sig(SIGTERM, cfg_priv->event_tsk, 1); - kthread_stop(cfg_priv->event_tsk); - cfg_priv->event_tsk = NULL; - } } static void brcmf_init_eq(struct brcmf_cfg80211_priv *cfg_priv) @@ -3352,8 +3313,7 @@ static s32 wl_init_priv(struct brcmf_cfg80211_priv *cfg_priv) err = brcmf_init_priv_mem(cfg_priv); if (unlikely(err)) return err; - if (unlikely(brcmf_create_event_handler(cfg_priv))) - return -ENOMEM; + INIT_WORK(&cfg_priv->event_work, brcmf_cfg80211_event_handler); brcmf_init_eloop_handler(&cfg_priv->el); mutex_init(&cfg_priv->usr_sync); err = brcmf_init_iscan(cfg_priv); @@ -3368,7 +3328,7 @@ static s32 wl_init_priv(struct brcmf_cfg80211_priv *cfg_priv) static void wl_deinit_priv(struct brcmf_cfg80211_priv *cfg_priv) { - brcmf_destroy_event_handler(cfg_priv); + cancel_work_sync(&cfg_priv->event_work); cfg_priv->dongle_up = false; /* dongle down */ brcmf_flush_eq(cfg_priv); brcmf_link_down(cfg_priv); @@ -3438,11 +3398,6 @@ void brcmf_cfg80211_detach(struct brcmf_cfg80211_dev *cfg_dev) kfree(cfg_dev); } -static void brcmf_wakeup_event(struct brcmf_cfg80211_priv *cfg_priv) -{ - wake_up(&cfg_priv->event_waitq); -} - void brcmf_cfg80211_event(struct net_device *ndev, const struct brcmf_event_msg *e, void *data) @@ -3451,7 +3406,7 @@ brcmf_cfg80211_event(struct net_device *ndev, struct brcmf_cfg80211_priv *cfg_priv = ndev_to_cfg(ndev); if (likely(!brcmf_enq_event(cfg_priv, event_type, e))) - brcmf_wakeup_event(cfg_priv); + schedule_work(&cfg_priv->event_work); } static s32 brcmf_dongle_mode(struct net_device *ndev, s32 iftype) diff --git a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h index d27d4e6f9431..79806c0bb9e9 100644 --- a/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h +++ b/drivers/staging/brcm80211/brcmfmac/wl_cfg80211.h @@ -298,8 +298,7 @@ struct brcmf_cfg80211_priv { struct brcmf_cfg80211_iscan_ctrl *iscan; /* iscan controller */ struct brcmf_cfg80211_connect_info conn_info; /* association info */ struct brcmf_cfg80211_pmk_list *pmk_list; /* wpa2 pmk list */ - struct task_struct *event_tsk; /* task of main event handler thread */ - wait_queue_head_t event_waitq; /* wait queue for main event handling */ + struct work_struct event_work; /* event handler work struct */ unsigned long status; /* current dongle status */ void *pub; u32 channel; /* current channel */