From 92541dd9dda5ab474751e24cdb4253eb290b8b33 Mon Sep 17 00:00:00 2001 From: Ping-Ke Shih Date: Mon, 18 Nov 2019 11:14:54 +0800 Subject: [PATCH] rtlwifi: rf_lock use non-irqsave spin_lock rf_lock is used to protect RF register access, but they will not called from interrupt context, so *_irqsave version isn't necessary. Then, these delays don't affect IRQ services. The old code holds spin_lock_irqsave() that will be detected a long delay as below: kworker/-276 4d... 0us : _raw_spin_lock_irqsave kworker/-276 4d... 0us : rtl8723_phy_rf_serial_read <-rtl8723de_phy_set_rf_reg kworker/-276 4d... 1us : rtl8723_phy_query_bb_reg <-rtl8723_phy_rf_serial_read kworker/-276 4d... 3us : rtl8723_phy_set_bb_reg <-rtl8723_phy_rf_serial_read kworker/-276 4d... 4us : __const_udelay <-rtl8723_phy_rf_serial_read kworker/-276 4d... 4us!: delay_mwaitx <-rtl8723_phy_rf_serial_read kworker/-276 4d... 1004us : rtl8723_phy_set_bb_reg <-rtl8723_phy_rf_serial_read [...] Reported-by: Lucas Stach Signed-off-by: Ping-Ke Shih Signed-off-by: Kalle Valo --- drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c | 10 ++++------ drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c | 10 ++++------ drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c | 10 ++++------ drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c | 10 ++++------ drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c | 10 ++++------ drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c | 10 ++++------ 6 files changed, 24 insertions(+), 36 deletions(-) diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c index 978e6a16..0120665 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8188ee/phy.c @@ -85,20 +85,19 @@ u32 rtl88e_phy_query_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, readback_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); original_value = _rtl88e_phy_rf_serial_read(hw, rfpath, regaddr); bitshift = _rtl88e_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x), original_value(%#x)\n", @@ -112,13 +111,12 @@ void rtl88e_phy_set_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, rfpath); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (bitmask != RFREG_OFFSET_MASK) { original_value = _rtl88e_phy_rf_serial_read(hw, @@ -133,7 +131,7 @@ void rtl88e_phy_set_rf_reg(struct ieee80211_hw *hw, _rtl88e_phy_rf_serial_write(hw, rfpath, regaddr, data); - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c index 0ae6371..4b67219 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192de/phy.c @@ -307,16 +307,15 @@ u32 rtl92d_phy_query_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, readback_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); original_value = _rtl92d_phy_rf_serial_read(hw, rfpath, regaddr); bitshift = _rtl92d_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x), original_value(%#x)\n", regaddr, rfpath, bitmask, original_value); @@ -329,14 +328,13 @@ void rtl92d_phy_set_rf_reg(struct ieee80211_hw *hw, enum radio_path rfpath, struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &(rtlpriv->phy); u32 original_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, rfpath); if (bitmask == 0) return; - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (rtlphy->rf_mode != RF_OP_BY_FW) { if (bitmask != RFREG_OFFSET_MASK) { original_value = _rtl92d_phy_rf_serial_read(hw, @@ -347,7 +345,7 @@ void rtl92d_phy_set_rf_reg(struct ieee80211_hw *hw, enum radio_path rfpath, } _rtl92d_phy_rf_serial_write(hw, rfpath, regaddr, data); } - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, rfpath); diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c index f03de8b..75265b4 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c @@ -84,19 +84,18 @@ u32 rtl92ee_phy_query_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, readback_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); original_value = _rtl92ee_phy_rf_serial_read(hw , rfpath, regaddr); bitshift = _rtl92ee_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x),rfpath(%#x),bitmask(%#x),original_value(%#x)\n", @@ -111,13 +110,12 @@ void rtl92ee_phy_set_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", addr, bitmask, data, rfpath); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (bitmask != RFREG_OFFSET_MASK) { original_value = _rtl92ee_phy_rf_serial_read(hw, rfpath, addr); @@ -127,7 +125,7 @@ void rtl92ee_phy_set_rf_reg(struct ieee80211_hw *hw, _rtl92ee_phy_rf_serial_write(hw, rfpath, addr, data); - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c index 1385e5a..772aece 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723ae/phy.c @@ -37,13 +37,12 @@ u32 rtl8723e_phy_query_rf_reg(struct ieee80211_hw *hw, struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value = 0, readback_value, bitshift; struct rtl_phy *rtlphy = &rtlpriv->phy; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (rtlphy->rf_mode != RF_OP_BY_FW) { original_value = rtl8723_phy_rf_serial_read(hw, @@ -53,7 +52,7 @@ u32 rtl8723e_phy_query_rf_reg(struct ieee80211_hw *hw, bitshift = rtl8723_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x), original_value(%#x)\n", @@ -69,13 +68,12 @@ void rtl8723e_phy_set_rf_reg(struct ieee80211_hw *hw, struct rtl_priv *rtlpriv = rtl_priv(hw); struct rtl_phy *rtlphy = &rtlpriv->phy; u32 original_value = 0, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, rfpath); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (rtlphy->rf_mode != RF_OP_BY_FW) { if (bitmask != RFREG_OFFSET_MASK) { @@ -99,7 +97,7 @@ void rtl8723e_phy_set_rf_reg(struct ieee80211_hw *hw, _rtl8723e_phy_fw_rf_serial_write(hw, rfpath, regaddr, data); } - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c index d483644..9528ac3 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c @@ -33,19 +33,18 @@ u32 rtl8723be_phy_query_rf_reg(struct ieee80211_hw *hw, enum radio_path rfpath, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, readback_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); original_value = rtl8723_phy_rf_serial_read(hw, rfpath, regaddr); bitshift = rtl8723_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x), original_value(%#x)\n", @@ -59,13 +58,12 @@ void rtl8723be_phy_set_rf_reg(struct ieee80211_hw *hw, enum radio_path path, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, path); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (bitmask != RFREG_OFFSET_MASK) { original_value = rtl8723_phy_rf_serial_read(hw, path, @@ -77,7 +75,7 @@ void rtl8723be_phy_set_rf_reg(struct ieee80211_hw *hw, enum radio_path path, rtl8723_phy_rf_serial_write(hw, path, regaddr, data); - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c index c1a04ef..b8a2b23 100644 --- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c +++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/phy.c @@ -139,19 +139,18 @@ u32 rtl8821ae_phy_query_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, readback_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x)\n", regaddr, rfpath, bitmask); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); original_value = _rtl8821ae_phy_rf_serial_read(hw, rfpath, regaddr); bitshift = _rtl8821ae_phy_calculate_bit_shift(bitmask); readback_value = (original_value & bitmask) >> bitshift; - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), rfpath(%#x), bitmask(%#x), original_value(%#x)\n", @@ -166,13 +165,12 @@ void rtl8821ae_phy_set_rf_reg(struct ieee80211_hw *hw, { struct rtl_priv *rtlpriv = rtl_priv(hw); u32 original_value, bitshift; - unsigned long flags; RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", regaddr, bitmask, data, rfpath); - spin_lock_irqsave(&rtlpriv->locks.rf_lock, flags); + spin_lock(&rtlpriv->locks.rf_lock); if (bitmask != RFREG_OFFSET_MASK) { original_value = @@ -183,7 +181,7 @@ void rtl8821ae_phy_set_rf_reg(struct ieee80211_hw *hw, _rtl8821ae_phy_rf_serial_write(hw, rfpath, regaddr, data); - spin_unlock_irqrestore(&rtlpriv->locks.rf_lock, flags); + spin_unlock(&rtlpriv->locks.rf_lock); RT_TRACE(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x), data(%#x), rfpath(%#x)\n", -- 2.7.4