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path: root/drivers/net/wireless/bcm43xx/bcm43xx_main.c
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Diffstat (limited to 'drivers/net/wireless/bcm43xx/bcm43xx_main.c')
-rw-r--r--drivers/net/wireless/bcm43xx/bcm43xx_main.c28
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 c5d6753a55e..dfbd01eaaf3 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)