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rtlwifi: merge ips,lps spinlocks into one mutex

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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 <philipp@dreimann.net>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Mike McCormack <mikem@ring3k.org>
Cc: Chaoming Li <chaoming_li@realsil.com.cn>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Tested-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Stanislaw Gruszka 2011-12-12 12:43:24 +01:00 committed by John W. Linville
parent 41affd5286
commit 6539306b2c
3 changed files with 12 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/rtlwifi/base.c
View File

@ -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);

21
drivers/net/wireless/rtlwifi/ps.c
View File

@ -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)) {

3
drivers/net/wireless/rtlwifi/wifi.h
View File

@ -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*/