From 6539306b2c3ceafbc4094cf68c58094c282da053 Mon Sep 17 00:00:00 2001 From: Stanislaw Gruszka Date: Mon, 12 Dec 2011 12:43:24 +0100 Subject: [PATCH] rtlwifi: merge ips,lps spinlocks into one mutex With previous patch "rtlwifi: use work for lps" we can now use mutex for protecting ps mode changing critical sections. This fixes running system with interrupts disabled for long time. Merge ips_lock and lps_lock as they seems to protect the same data structures (accessed in rtl_ps_set_rf_state() function). Reported-by: Philipp Dreimann Tested-by: Larry Finger Cc: Mike McCormack Cc: Chaoming Li Signed-off-by: Stanislaw Gruszka Signed-off-by: Larry Finger Tested-by: Tim Gardner Signed-off-by: John W. Linville --- drivers/net/wireless/rtlwifi/base.c | 3 +-- drivers/net/wireless/rtlwifi/ps.c | 21 ++++++++++----------- drivers/net/wireless/rtlwifi/wifi.h | 3 +-- 3 files changed, 12 insertions(+), 15 deletions(-) diff --git a/drivers/net/wireless/rtlwifi/base.c b/drivers/net/wireless/rtlwifi/base.c index a13ecfce482..d81a6021a30 100644 --- a/drivers/net/wireless/rtlwifi/base.c +++ b/drivers/net/wireless/rtlwifi/base.c @@ -448,12 +448,11 @@ int rtl_init_core(struct ieee80211_hw *hw) /* <4> locks */ mutex_init(&rtlpriv->locks.conf_mutex); - spin_lock_init(&rtlpriv->locks.ips_lock); + mutex_init(&rtlpriv->locks.ps_mutex); spin_lock_init(&rtlpriv->locks.irq_th_lock); spin_lock_init(&rtlpriv->locks.h2c_lock); spin_lock_init(&rtlpriv->locks.rf_ps_lock); spin_lock_init(&rtlpriv->locks.rf_lock); - spin_lock_init(&rtlpriv->locks.lps_lock); spin_lock_init(&rtlpriv->locks.waitq_lock); spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock); diff --git a/drivers/net/wireless/rtlwifi/ps.c b/drivers/net/wireless/rtlwifi/ps.c index 55c8e50f45f..a14a68b2463 100644 --- a/drivers/net/wireless/rtlwifi/ps.c +++ b/drivers/net/wireless/rtlwifi/ps.c @@ -241,7 +241,7 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw) if (mac->opmode != NL80211_IFTYPE_STATION) return; - spin_lock(&rtlpriv->locks.ips_lock); + mutex_lock(&rtlpriv->locks.ps_mutex); if (ppsc->inactiveps) { rtstate = ppsc->rfpwr_state; @@ -257,7 +257,7 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw) } } - spin_unlock(&rtlpriv->locks.ips_lock); + mutex_unlock(&rtlpriv->locks.ps_mutex); } /*for FW LPS*/ @@ -395,7 +395,7 @@ void rtl_lps_enter(struct ieee80211_hw *hw) if (mac->link_state != MAC80211_LINKED) return; - spin_lock_irq(&rtlpriv->locks.lps_lock); + mutex_lock(&rtlpriv->locks.ps_mutex); /* Idle for a while if we connect to AP a while ago. */ if (mac->cnt_after_linked >= 2) { @@ -407,7 +407,7 @@ void rtl_lps_enter(struct ieee80211_hw *hw) } } - spin_unlock_irq(&rtlpriv->locks.lps_lock); + mutex_unlock(&rtlpriv->locks.ps_mutex); } /*Leave the leisure power save mode.*/ @@ -416,9 +416,8 @@ void rtl_lps_leave(struct ieee80211_hw *hw) struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw)); - unsigned long flags; - spin_lock_irqsave(&rtlpriv->locks.lps_lock, flags); + mutex_lock(&rtlpriv->locks.ps_mutex); if (ppsc->fwctrl_lps) { if (ppsc->dot11_psmode != EACTIVE) { @@ -439,7 +438,7 @@ void rtl_lps_leave(struct ieee80211_hw *hw) rtl_lps_set_psmode(hw, EACTIVE); } } - spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flags); + mutex_unlock(&rtlpriv->locks.ps_mutex); } /* For sw LPS*/ @@ -540,9 +539,9 @@ void rtl_swlps_rf_awake(struct ieee80211_hw *hw) RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } - spin_lock_irq(&rtlpriv->locks.lps_lock); + mutex_lock(&rtlpriv->locks.ps_mutex); rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); - spin_unlock_irq(&rtlpriv->locks.lps_lock); + mutex_unlock(&rtlpriv->locks.ps_mutex); } void rtl_swlps_rfon_wq_callback(void *data) @@ -575,9 +574,9 @@ void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) if (rtlpriv->link_info.busytraffic) return; - spin_lock_irq(&rtlpriv->locks.lps_lock); + mutex_lock(&rtlpriv->locks.ps_mutex); rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); - spin_unlock_irq(&rtlpriv->locks.lps_lock); + mutex_unlock(&rtlpriv->locks.ps_mutex); if (ppsc->reg_rfps_level & RT_RF_OFF_LEVL_ASPM && !RT_IN_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM)) { diff --git a/drivers/net/wireless/rtlwifi/wifi.h b/drivers/net/wireless/rtlwifi/wifi.h index 6e6353bbc7b..085dccdbd1b 100644 --- a/drivers/net/wireless/rtlwifi/wifi.h +++ b/drivers/net/wireless/rtlwifi/wifi.h @@ -1544,14 +1544,13 @@ struct rtl_hal_cfg { struct rtl_locks { /* mutex */ struct mutex conf_mutex; + struct mutex ps_mutex; /*spin lock */ - spinlock_t ips_lock; spinlock_t irq_th_lock; spinlock_t h2c_lock; spinlock_t rf_ps_lock; spinlock_t rf_lock; - spinlock_t lps_lock; spinlock_t waitq_lock; /*Dual mac*/ -- 2.41.0