diff options
Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_main.c')
| -rw-r--r-- | drivers/net/wireless/bcm43xx/bcm43xx_main.c | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/net/wireless/bcm43xx/bcm43xx_main.c b/drivers/net/wireless/bcm43xx/bcm43xx_main.c index c5d6753a55ea..dfbd01eaaf34 100644 --- a/drivers/net/wireless/bcm43xx/bcm43xx_main.c +++ b/drivers/net/wireless/bcm43xx/bcm43xx_main.c @@ -3183,6 +3183,9 @@ static void bcm43xx_periodic_work_handler(struct work_struct *work) unsigned long orig_trans_start = 0; mutex_lock(&bcm->mutex); + /* keep from doing and rearming periodic work if shutting down */ + if (bcm43xx_status(bcm) == BCM43xx_STAT_UNINIT) + goto unlock_mutex; if (unlikely(bcm->periodic_state % 60 == 0)) { /* Periodic work will take a long time, so we want it to * be preemtible. @@ -3228,14 +3231,10 @@ static void bcm43xx_periodic_work_handler(struct work_struct *work) mmiowb(); bcm->periodic_state++; spin_unlock_irqrestore(&bcm->irq_lock, flags); +unlock_mutex: mutex_unlock(&bcm->mutex); } -void bcm43xx_periodic_tasks_delete(struct bcm43xx_private *bcm) -{ - cancel_rearming_delayed_work(&bcm->periodic_work); -} - void bcm43xx_periodic_tasks_setup(struct bcm43xx_private *bcm) { struct delayed_work *work = &bcm->periodic_work; @@ -3285,6 +3284,14 @@ static int bcm43xx_rng_init(struct bcm43xx_private *bcm) return err; } +void bcm43xx_cancel_work(struct bcm43xx_private *bcm) +{ + /* The system must be unlocked when this routine is entered. + * If not, the next 2 steps may deadlock */ + cancel_work_sync(&bcm->restart_work); + cancel_delayed_work_sync(&bcm->periodic_work); +} + static int bcm43xx_shutdown_all_wireless_cores(struct bcm43xx_private *bcm) { int ret = 0; @@ -3321,7 +3328,12 @@ static void bcm43xx_free_board(struct bcm43xx_private *bcm) { bcm43xx_rng_exit(bcm); bcm43xx_sysfs_unregister(bcm); - bcm43xx_periodic_tasks_delete(bcm); + + mutex_lock(&(bcm)->mutex); + bcm43xx_set_status(bcm, BCM43xx_STAT_UNINIT); + mutex_unlock(&(bcm)->mutex); + + bcm43xx_cancel_work(bcm); mutex_lock(&(bcm)->mutex); bcm43xx_shutdown_all_wireless_cores(bcm); @@ -4016,7 +4028,7 @@ static int bcm43xx_net_stop(struct net_device *net_dev) err = bcm43xx_disable_interrupts_sync(bcm); assert(!err); bcm43xx_free_board(bcm); - flush_scheduled_work(); + bcm43xx_cancel_work(bcm); return 0; } @@ -4148,9 +4160,9 @@ static void bcm43xx_chip_reset(struct work_struct *work) struct bcm43xx_phyinfo *phy; int err = -ENODEV; + bcm43xx_cancel_work(bcm); mutex_lock(&(bcm)->mutex); if (bcm43xx_status(bcm) == BCM43xx_STAT_INITIALIZED) { - bcm43xx_periodic_tasks_delete(bcm); phy = bcm43xx_current_phy(bcm); err = bcm43xx_select_wireless_core(bcm, phy->type); if (!err) |