From: Ping-Ke Shih <[email protected]> Enter/leavel IPS and LPS are large critical section, and they can't use sleep function because running in atomic-context, which own a spin_lock. In commit 460884ad ("rtlwifi: Fix enter/exit power_save"), it moves LPS functions to thread-context, so this commit can simply change LPS's spin lock to mutex.
Considering IPS functions, rtl_ips_nic_on() may be called by TX tasklet (softirq-context) that check whether packet is auth frame. Fortunately, current mac80211 will ask driver to leave IPS using op_config with changed flag IEEE80211_CONF_CHANGE_IDLE, before issuing auth frame, so IPS functions can run in thread-context and use mutex to protect critical section, too. In addition to above conversion, this commit removes some useless spin locks. Signed-off-by: Ping-Ke Shih <[email protected]> Signed-off-by: Larry Finger <[email protected]> Cc: Yan-Hsuan Chuang <[email protected]> Cc: Birming Chiu <[email protected]> Cc: Shaofu <[email protected]> Cc: Steven Ting <[email protected]> --- drivers/net/wireless/realtek/rtlwifi/base.c | 6 ++---- drivers/net/wireless/realtek/rtlwifi/ps.c | 24 ++++++++++-------------- drivers/net/wireless/realtek/rtlwifi/usb.c | 1 - drivers/net/wireless/realtek/rtlwifi/wifi.h | 10 ++-------- 4 files changed, 14 insertions(+), 27 deletions(-) diff --git a/drivers/net/wireless/realtek/rtlwifi/base.c b/drivers/net/wireless/realtek/rtlwifi/base.c index c145cfe27216..d933392dfc04 100644 --- a/drivers/net/wireless/realtek/rtlwifi/base.c +++ b/drivers/net/wireless/realtek/rtlwifi/base.c @@ -552,7 +552,8 @@ 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.ips_mutex); + mutex_init(&rtlpriv->locks.lps_mutex); spin_lock_init(&rtlpriv->locks.irq_th_lock); spin_lock_init(&rtlpriv->locks.h2c_lock); spin_lock_init(&rtlpriv->locks.rf_ps_lock); @@ -562,9 +563,7 @@ int rtl_init_core(struct ieee80211_hw *hw) spin_lock_init(&rtlpriv->locks.c2hcmd_lock); spin_lock_init(&rtlpriv->locks.scan_list_lock); spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock); - spin_lock_init(&rtlpriv->locks.check_sendpkt_lock); spin_lock_init(&rtlpriv->locks.fw_ps_lock); - spin_lock_init(&rtlpriv->locks.lps_lock); spin_lock_init(&rtlpriv->locks.iqk_lock); /* <5> init list */ INIT_LIST_HEAD(&rtlpriv->entry_list); @@ -1230,7 +1229,6 @@ bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb) } if (ieee80211_is_auth(fc)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n"); - rtl_ips_nic_on(hw); mac->link_state = MAC80211_LINKING; /* Dul mac */ diff --git a/drivers/net/wireless/realtek/rtlwifi/ps.c b/drivers/net/wireless/realtek/rtlwifi/ps.c index c64544158516..972ed58f20d6 100644 --- a/drivers/net/wireless/realtek/rtlwifi/ps.c +++ b/drivers/net/wireless/realtek/rtlwifi/ps.c @@ -289,7 +289,7 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw) cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq); - spin_lock(&rtlpriv->locks.ips_lock); + mutex_lock(&rtlpriv->locks.ips_mutex); if (ppsc->inactiveps) { rtstate = ppsc->rfpwr_state; @@ -308,7 +308,7 @@ void rtl_ips_nic_on(struct ieee80211_hw *hw) ppsc->inactive_pwrstate); } } - spin_unlock(&rtlpriv->locks.ips_lock); + mutex_unlock(&rtlpriv->locks.ips_mutex); } EXPORT_SYMBOL_GPL(rtl_ips_nic_on); @@ -417,7 +417,6 @@ static void rtl_lps_enter_core(struct ieee80211_hw *hw) struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_priv *rtlpriv = rtl_priv(hw); - unsigned long flag; if (!ppsc->fwctrl_lps) return; @@ -438,7 +437,7 @@ static void rtl_lps_enter_core(struct ieee80211_hw *hw) if (mac->link_state != MAC80211_LINKED) return; - spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag); + mutex_lock(&rtlpriv->locks.lps_mutex); /* Don't need to check (ppsc->dot11_psmode == EACTIVE), because * bt_ccoexist may ask to enter lps. @@ -448,7 +447,7 @@ static void rtl_lps_enter_core(struct ieee80211_hw *hw) "Enter 802.11 power save mode...\n"); rtl_lps_set_psmode(hw, EAUTOPS); - spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag); + mutex_unlock(&rtlpriv->locks.lps_mutex); } /* Interrupt safe routine to leave the leisure power save mode.*/ @@ -457,9 +456,8 @@ static void rtl_lps_leave_core(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 flag; - spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag); + mutex_lock(&rtlpriv->locks.lps_mutex); if (ppsc->fwctrl_lps) { if (ppsc->dot11_psmode != EACTIVE) { @@ -480,7 +478,7 @@ static void rtl_lps_leave_core(struct ieee80211_hw *hw) rtl_lps_set_psmode(hw, EACTIVE); } } - spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag); + mutex_unlock(&rtlpriv->locks.lps_mutex); } /* For sw LPS*/ @@ -570,7 +568,6 @@ void rtl_swlps_rf_awake(struct ieee80211_hw *hw) struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); - unsigned long flag; if (!rtlpriv->psc.swctrl_lps) return; @@ -583,9 +580,9 @@ void rtl_swlps_rf_awake(struct ieee80211_hw *hw) RT_CLEAR_PS_LEVEL(ppsc, RT_PS_LEVEL_ASPM); } - spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag); + mutex_lock(&rtlpriv->locks.lps_mutex); rtl_ps_set_rf_state(hw, ERFON, RF_CHANGE_BY_PS); - spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag); + mutex_unlock(&rtlpriv->locks.lps_mutex); } void rtl_swlps_rfon_wq_callback(void *data) @@ -602,7 +599,6 @@ void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_mac *mac = rtl_mac(rtl_priv(hw)); struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw)); - unsigned long flag; u8 sleep_intv; if (!rtlpriv->psc.sw_ps_enabled) @@ -626,9 +622,9 @@ void rtl_swlps_rf_sleep(struct ieee80211_hw *hw) } spin_unlock(&rtlpriv->locks.rf_ps_lock); - spin_lock_irqsave(&rtlpriv->locks.lps_lock, flag); + mutex_lock(&rtlpriv->locks.lps_mutex); rtl_ps_set_rf_state(hw, ERFSLEEP, RF_CHANGE_BY_PS); - spin_unlock_irqrestore(&rtlpriv->locks.lps_lock, flag); + mutex_unlock(&rtlpriv->locks.lps_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/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c index 5590d07d0918..7a1cb69b6ec8 100644 --- a/drivers/net/wireless/realtek/rtlwifi/usb.c +++ b/drivers/net/wireless/realtek/rtlwifi/usb.c @@ -967,7 +967,6 @@ static void _rtl_usb_tx_preprocess(struct ieee80211_hw *hw, memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc)); if (ieee80211_is_auth(fc)) { RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n"); - rtl_ips_nic_on(hw); } if (rtlpriv->psc.sw_ps_enabled) { diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h b/drivers/net/wireless/realtek/rtlwifi/wifi.h index 597f12025e6b..6c261b16a17d 100644 --- a/drivers/net/wireless/realtek/rtlwifi/wifi.h +++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h @@ -2336,17 +2336,14 @@ struct rtl_hal_cfg { struct rtl_locks { /* mutex */ struct mutex conf_mutex; - struct mutex ps_mutex; + struct mutex ips_mutex; /* mutex for enter/leave IPS */ + struct mutex lps_mutex; /* mutex for enter/leave LPS */ /*spin lock */ - spinlock_t ips_lock; spinlock_t irq_th_lock; - spinlock_t irq_pci_lock; - spinlock_t tx_lock; spinlock_t h2c_lock; spinlock_t rf_ps_lock; spinlock_t rf_lock; - spinlock_t lps_lock; spinlock_t waitq_lock; spinlock_t entry_list_lock; spinlock_t usb_lock; @@ -2359,9 +2356,6 @@ struct rtl_locks { /*Dual mac*/ spinlock_t cck_and_rw_pagea_lock; - /*Easy concurrent*/ - spinlock_t check_sendpkt_lock; - spinlock_t iqk_lock; }; -- 2.12.3
