diff options
| author | Sujith <Sujith.Manoharan@atheros.com> | 2010-06-01 09:44:16 (GMT) |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-06-03 18:14:40 (GMT) |
| commit | 23367769af90b63231cce6d70a39f1700ca5c03d (patch) | |
| tree | 4c6ee38e365c15b73cc314a876a58e9815fc1375 /drivers | |
| parent | 3901737e25a85052e9650547f95aede62abc999b (diff) | |
| download | linux-23367769af90b63231cce6d70a39f1700ca5c03d.tar.xz | |
ath9k_htc: Fix locking for ps_idle
ps_idle is protected by the htc_pm_lock mutex.
Use it to protect the variable.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/htc_drv_main.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c index c6ad15a..b62bfa5 100644 --- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c +++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c @@ -1401,16 +1401,17 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed) bool enable_radio = false; bool idle = !!(conf->flags & IEEE80211_CONF_IDLE); + mutex_lock(&priv->htc_pm_lock); if (!idle && priv->ps_idle) enable_radio = true; - priv->ps_idle = idle; + mutex_unlock(&priv->htc_pm_lock); if (enable_radio) { - ath9k_htc_setpower(priv, ATH9K_PM_AWAKE); - ath9k_htc_radio_enable(hw); ath_print(common, ATH_DBG_CONFIG, "not-idle: enabling radio\n"); + ath9k_htc_setpower(priv, ATH9K_PM_AWAKE); + ath9k_htc_radio_enable(hw); } } @@ -1453,14 +1454,21 @@ static int ath9k_htc_config(struct ieee80211_hw *hw, u32 changed) } } - if ((changed & IEEE80211_CONF_CHANGE_IDLE) && priv->ps_idle) { + if (changed & IEEE80211_CONF_CHANGE_IDLE) { + mutex_lock(&priv->htc_pm_lock); + if (!priv->ps_idle) { + mutex_unlock(&priv->htc_pm_lock); + goto out; + } + mutex_unlock(&priv->htc_pm_lock); + ath_print(common, ATH_DBG_CONFIG, "idle: disabling radio\n"); ath9k_htc_radio_disable(hw); } +out: mutex_unlock(&priv->mutex); - return 0; } |