Patch "wifi: rtlwifi: rtl8192c: using calculate_bit_shift()" has been added to the 5.15-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    wifi: rtlwifi: rtl8192c: using calculate_bit_shift()

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     wifi-rtlwifi-rtl8192c-using-calculate_bit_shift.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit d6f637594531fc9743b185988212c005e676c7d4
Author: Su Hui <suhui@xxxxxxxxxxxx>
Date:   Tue Dec 19 14:57:32 2023 +0800

    wifi: rtlwifi: rtl8192c: using calculate_bit_shift()
    
    [ Upstream commit 1dedc3a6699d827d345019e921b8d8f37f694333 ]
    
    Using calculate_bit_shift() to replace _rtl92c_phy_calculate_bit_shift().
    And fix the undefined bitwise shift behavior problem.
    
    Fixes: 4295cd254af3 ("rtlwifi: Move common parts of rtl8192ce/phy.c")
    Signed-off-by: Su Hui <suhui@xxxxxxxxxxxx>
    Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
    Link: https://msgid.link/20231219065739.1895666-5-suhui@xxxxxxxxxxxx
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
index 3d29c8dbb255..144ee780e1b6 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.c
@@ -17,7 +17,7 @@ u32 rtl92c_phy_query_bb_reg(struct ieee80211_hw *hw, u32 regaddr, u32 bitmask)
 	rtl_dbg(rtlpriv, COMP_RF, DBG_TRACE, "regaddr(%#x), bitmask(%#x)\n",
 		regaddr, bitmask);
 	originalvalue = rtl_read_dword(rtlpriv, regaddr);
-	bitshift = _rtl92c_phy_calculate_bit_shift(bitmask);
+	bitshift = calculate_bit_shift(bitmask);
 	returnvalue = (originalvalue & bitmask) >> bitshift;
 
 	rtl_dbg(rtlpriv, COMP_RF, DBG_TRACE,
@@ -40,7 +40,7 @@ void rtl92c_phy_set_bb_reg(struct ieee80211_hw *hw,
 
 	if (bitmask != MASKDWORD) {
 		originalvalue = rtl_read_dword(rtlpriv, regaddr);
-		bitshift = _rtl92c_phy_calculate_bit_shift(bitmask);
+		bitshift = calculate_bit_shift(bitmask);
 		data = ((originalvalue & (~bitmask)) | (data << bitshift));
 	}
 
@@ -143,14 +143,6 @@ void _rtl92c_phy_rf_serial_write(struct ieee80211_hw *hw,
 }
 EXPORT_SYMBOL(_rtl92c_phy_rf_serial_write);
 
-u32 _rtl92c_phy_calculate_bit_shift(u32 bitmask)
-{
-	u32 i = ffs(bitmask);
-
-	return i ? i - 1 : 32;
-}
-EXPORT_SYMBOL(_rtl92c_phy_calculate_bit_shift);
-
 static void _rtl92c_phy_bb_config_1t(struct ieee80211_hw *hw)
 {
 	rtl_set_bbreg(hw, RFPGA0_TXINFO, 0x3, 0x2);
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.h b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.h
index 75afa6253ad0..e64d377dfe9e 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.h
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192c/phy_common.h
@@ -196,7 +196,6 @@ bool rtl92c_phy_set_rf_power_state(struct ieee80211_hw *hw,
 void rtl92ce_phy_set_rf_on(struct ieee80211_hw *hw);
 void rtl92c_phy_set_io(struct ieee80211_hw *hw);
 void rtl92c_bb_block_on(struct ieee80211_hw *hw);
-u32 _rtl92c_phy_calculate_bit_shift(u32 bitmask);
 long _rtl92c_phy_txpwr_idx_to_dbm(struct ieee80211_hw *hw,
 				  enum wireless_mode wirelessmode,
 				  u8 txpwridx);