rtlwifi: use s8 instead of char

Compiling the rtlwifi drivers for ARM with gcc -Wextra warns about lots of
incorrect code that results from 'char' being unsigned here, e.g.

realtek/rtlwifi/rc.c:113:18: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8188ee/dm.c:1070:22: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ce/trx.c:54:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192cu/mac.c:601:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192de/trx.c:53:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192ee/phy.c:1268:12: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8192se/rf.c:150:20: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/dm.c:877:29: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8723be/phy.c:386:16: error: comparison is always true due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/dm.c:1514:38: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:1558:11: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/phy.c:386:24: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/rtl8821ae/trx.c:55:12: error: comparison is always false due to limited range of data type [-Werror=type-limits]
realtek/rtlwifi/stats.c:31:16: error: comparison is always false due to limited range of data type [-Werror=type-limits]

This patch changes all uses of 'char' in this driver that refer to
8-bit integers to use 's8' instead, which is signed on all architectures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
index c2bf8d1a7af3..b7184f5e2698 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8192ee/phy.c
@@ -547,7 +547,7 @@ static void _rtl92ee_phy_store_txpower_by_rate_base(struct ieee80211_hw *hw)
 static void _phy_convert_txpower_dbm_to_relative_value(u32 *data, u8 start,
 						       u8 end, u8 base)
 {
-	char i = 0;
+	s8 i = 0;
 	u8 tmp = 0;
 	u32 temp_data = 0;
 
@@ -1189,7 +1189,7 @@ static u8 _rtl92ee_get_txpower_by_rate(struct ieee80211_hw *hw,
 	struct rtl_priv *rtlpriv = rtl_priv(hw);
 	struct rtl_phy *rtlphy = &rtlpriv->phy;
 	u8 shift = 0, sec, tx_num;
-	char diff = 0;
+	s8 diff = 0;
 
 	sec = _rtl92ee_phy_get_ratesection_intxpower_byrate(rf, rate);
 	tx_num = RF_TX_NUM_NONIMPLEMENT;
@@ -1265,14 +1265,14 @@ static u8 _rtl92ee_get_txpower_index(struct ieee80211_hw *hw,
 			 "Illegal channel!!\n");
 	}
 
-	if (IS_CCK_RATE(rate))
+	if (IS_CCK_RATE((s8)rate))
 		tx_power = rtlefuse->txpwrlevel_cck[rfpath][index];
 	else if (DESC92C_RATE6M <= rate)
 		tx_power = rtlefuse->txpwrlevel_ht40_1s[rfpath][index];
 
 	/* OFDM-1T*/
 	if (DESC92C_RATE6M <= rate && rate <= DESC92C_RATE54M &&
-	    !IS_CCK_RATE(rate))
+	    !IS_CCK_RATE((s8)rate))
 		tx_power += rtlefuse->txpwr_legacyhtdiff[rfpath][TX_1S];
 
 	/* BW20-1S, BW20-2S */
@@ -2969,7 +2969,7 @@ void rtl92ee_phy_lc_calibrate(struct ieee80211_hw *hw)
 	rtlphy->lck_inprogress = false;
 }
 
-void rtl92ee_phy_ap_calibrate(struct ieee80211_hw *hw, char delta)
+void rtl92ee_phy_ap_calibrate(struct ieee80211_hw *hw, s8 delta)
 {
 }