wireless: use ARRAY_SIZE

Using the ARRAY_SIZE macro improves the readability of the code. Also,
it is not always useful to use a variable to store this constant
calculated at compile time.

Found with Coccinelle with the following semantic patch:
@r depends on (org || report)@
type T;
T[] E;
position p;
@@
(
 (sizeof(E)@p /sizeof(*E))
|
 (sizeof(E)@p /sizeof(E[...]))
|
 (sizeof(E)@p /sizeof(T))
)
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@lse.epita.fr>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/rtl8723be/hw.c

@@ -43,6 +43,7 @@
 #include "../pwrseqcmd.h"
 #include "pwrseq.h"
 #include "../btcoexist/rtl_btc.h"
+#include <linux/kernel.h>
 
 #define LLT_CONFIG	5
 
@@ -2126,28 +2127,28 @@ static void _rtl8723be_read_adapter_info(struct ieee80211_hw *hw,
 
 	if (rtlhal->oem_id == RT_CID_DEFAULT) {
 		/* Does this one have a Toshiba SMID from group 1? */
-		for (i = 0; i < sizeof(toshiba_smid1) / sizeof(u16); i++) {
+		for (i = 0; i < ARRAY_SIZE(toshiba_smid1); i++) {
 			if (rtlefuse->eeprom_smid == toshiba_smid1[i]) {
 				is_toshiba_smid1 = true;
 				break;
 			}
 		}
 		/* Does this one have a Toshiba SMID from group 2? */
-		for (i = 0; i < sizeof(toshiba_smid2) / sizeof(u16); i++) {
+		for (i = 0; i < ARRAY_SIZE(toshiba_smid2); i++) {
 			if (rtlefuse->eeprom_smid == toshiba_smid2[i]) {
 				is_toshiba_smid2 = true;
 				break;
 			}
 		}
 		/* Does this one have a Samsung SMID? */
-		for (i = 0; i < sizeof(samsung_smid) / sizeof(u16); i++) {
+		for (i = 0; i < ARRAY_SIZE(samsung_smid); i++) {
 			if (rtlefuse->eeprom_smid == samsung_smid[i]) {
 				is_samsung_smid = true;
 				break;
 			}
 		}
 		/* Does this one have a Lenovo SMID? */
-		for (i = 0; i < sizeof(lenovo_smid) / sizeof(u16); i++) {
+		for (i = 0; i < ARRAY_SIZE(lenovo_smid); i++) {
 			if (rtlefuse->eeprom_smid == lenovo_smid[i]) {
 				is_lenovo_smid = true;
 				break;

drivers/net/wireless/realtek/rtlwifi/rtl8723be/phy.c

@@ -35,6 +35,7 @@
 #include "../rtl8723com/dm_common.h"
 #include "table.h"
 #include "trx.h"
+#include <linux/kernel.h>
 
 static bool _rtl8723be_phy_bb8723b_config_parafile(struct ieee80211_hw *hw);
 static bool _rtl8723be_phy_config_mac_with_headerfile(struct ieee80211_hw *hw);
@@ -1143,14 +1144,13 @@ void rtl8723be_phy_set_txpower_level(struct ieee80211_hw *hw, u8 channel)
 			     DESC92C_RATEMCS2, DESC92C_RATEMCS3,
 			     DESC92C_RATEMCS4, DESC92C_RATEMCS5,
 			     DESC92C_RATEMCS6, DESC92C_RATEMCS7};
-	u8 i, size;
+	u8 i;
 	u8 power_index;
 
 	if (!rtlefuse->txpwr_fromeprom)
 		return;
 
-	size = sizeof(cck_rates) / sizeof(u8);
-	for (i = 0; i < size; i++) {
+	for (i = 0; i < ARRAY_SIZE(cck_rates); i++) {
 		power_index = _rtl8723be_get_txpower_index(hw, RF90_PATH_A,
 					cck_rates[i],
 					rtl_priv(hw)->phy.current_chan_bw,
@@ -1158,8 +1158,7 @@ void rtl8723be_phy_set_txpower_level(struct ieee80211_hw *hw, u8 channel)
 		_rtl8723be_phy_set_txpower_index(hw, power_index, RF90_PATH_A,
 						 cck_rates[i]);
 	}
-	size = sizeof(ofdm_rates) / sizeof(u8);
-	for (i = 0; i < size; i++) {
+	for (i = 0; i < ARRAY_SIZE(ofdm_rates); i++) {
 		power_index = _rtl8723be_get_txpower_index(hw, RF90_PATH_A,
 					ofdm_rates[i],
 					rtl_priv(hw)->phy.current_chan_bw,
@@ -1167,8 +1166,7 @@ void rtl8723be_phy_set_txpower_level(struct ieee80211_hw *hw, u8 channel)
 		_rtl8723be_phy_set_txpower_index(hw, power_index, RF90_PATH_A,
 						 ofdm_rates[i]);
 	}
-	size = sizeof(ht_rates_1t) / sizeof(u8);
-	for (i = 0; i < size; i++) {
+	for (i = 0; i < ARRAY_SIZE(ht_rates_1t); i++) {
 		power_index = _rtl8723be_get_txpower_index(hw, RF90_PATH_A,
 					ht_rates_1t[i],
 					rtl_priv(hw)->phy.current_chan_bw,

drivers/net/wireless/realtek/rtlwifi/rtl8723be/table.c

@@ -25,6 +25,7 @@
  *
  *****************************************************************************/
 
+#include <linux/kernel.h>
 #include "table.h"
 
 u32 RTL8723BEPHY_REG_1TARRAY[] = {
@@ -224,8 +225,7 @@ u32 RTL8723BEPHY_REG_1TARRAY[] = {
 
 };
 
-u32 RTL8723BEPHY_REG_1TARRAYLEN =
-	sizeof(RTL8723BEPHY_REG_1TARRAY) / sizeof(u32);
+u32 RTL8723BEPHY_REG_1TARRAYLEN = ARRAY_SIZE(RTL8723BEPHY_REG_1TARRAY);
 
 u32 RTL8723BEPHY_REG_ARRAY_PG[] = {
 	0, 0, 0, 0x00000e08, 0x0000ff00, 0x00003800,
@@ -236,8 +236,7 @@ u32 RTL8723BEPHY_REG_ARRAY_PG[] = {
 	0, 0, 0, 0x00000e14, 0xffffffff, 0x26303436
 };
 
-u32 RTL8723BEPHY_REG_ARRAY_PGLEN =
-		sizeof(RTL8723BEPHY_REG_ARRAY_PG) / sizeof(u32);
+u32 RTL8723BEPHY_REG_ARRAY_PGLEN = ARRAY_SIZE(RTL8723BEPHY_REG_ARRAY_PG);
 
 u32 RTL8723BE_RADIOA_1TARRAY[] = {
 		0x000, 0x00010000,
@@ -373,8 +372,7 @@ u32 RTL8723BE_RADIOA_1TARRAY[] = {
 
 };
 
-u32 RTL8723BE_RADIOA_1TARRAYLEN =
-	sizeof(RTL8723BE_RADIOA_1TARRAY) / sizeof(u32);
+u32 RTL8723BE_RADIOA_1TARRAYLEN = ARRAY_SIZE(RTL8723BE_RADIOA_1TARRAY);
 
 u32 RTL8723BEMAC_1T_ARRAY[] = {
 		0x02F, 0x00000030,
@@ -483,7 +481,7 @@ u32 RTL8723BEMAC_1T_ARRAY[] = {
 
 };
 
-u32 RTL8723BEMAC_1T_ARRAYLEN = sizeof(RTL8723BEMAC_1T_ARRAY) / sizeof(u32);
+u32 RTL8723BEMAC_1T_ARRAYLEN = ARRAY_SIZE(RTL8723BEMAC_1T_ARRAY);
 
 u32 RTL8723BEAGCTAB_1TARRAY[] = {
 		0xC78, 0xFD000001,
@@ -620,4 +618,4 @@ u32 RTL8723BEAGCTAB_1TARRAY[] = {
 
 };
 
-u32 RTL8723BEAGCTAB_1TARRAYLEN = sizeof(RTL8723BEAGCTAB_1TARRAY) / sizeof(u32);
+u32 RTL8723BEAGCTAB_1TARRAYLEN = ARRAY_SIZE(RTL8723BEAGCTAB_1TARRAY);

drivers/net/wireless/realtek/rtlwifi/rtl8821ae/table.c

@@ -24,7 +24,7 @@
  * Larry Finger <Larry.Finger@lwfinger.net>
  *
  *****************************************************************************/
-
+#include <linux/kernel.h>
 #include "table.h"
 u32 RTL8812AE_PHY_REG_ARRAY[] = {
 		0x800, 0x8020D010,
@@ -258,8 +258,7 @@ u32 RTL8812AE_PHY_REG_ARRAY[] = {
 		0xEB8, 0x00508242,
 };
 
-u32 RTL8812AE_PHY_REG_1TARRAYLEN =
-	sizeof(RTL8812AE_PHY_REG_ARRAY) / sizeof(u32);
+u32 RTL8812AE_PHY_REG_1TARRAYLEN = ARRAY_SIZE(RTL8812AE_PHY_REG_ARRAY);
 
 u32 RTL8821AE_PHY_REG_ARRAY[] = {
 	0x800, 0x0020D090,
@@ -436,8 +435,7 @@ u32 RTL8821AE_PHY_REG_ARRAY[] = {
 	0xCB8, 0x00508240,
 };
 
-u32 RTL8821AE_PHY_REG_1TARRAYLEN =
-	sizeof(RTL8821AE_PHY_REG_ARRAY) / sizeof(u32);
+u32 RTL8821AE_PHY_REG_1TARRAYLEN = ARRAY_SIZE(RTL8821AE_PHY_REG_ARRAY);
 
 u32 RTL8812AE_PHY_REG_ARRAY_PG[] = {
 	0, 0, 0, 0x00000c20, 0xffffffff, 0x34363840,
@@ -488,8 +486,7 @@ u32 RTL8812AE_PHY_REG_ARRAY_PG[] = {
 	1, 1, 1, 0x00000e4c, 0xffffffff, 0x22242628
 };
 
-u32 RTL8812AE_PHY_REG_ARRAY_PGLEN =
-		sizeof(RTL8812AE_PHY_REG_ARRAY_PG) / sizeof(u32);
+u32 RTL8812AE_PHY_REG_ARRAY_PGLEN = ARRAY_SIZE(RTL8812AE_PHY_REG_ARRAY_PG);
 
 u32 RTL8821AE_PHY_REG_ARRAY_PG[] = {
 	0, 0, 0, 0x00000c20, 0xffffffff, 0x32343638,
@@ -509,8 +506,7 @@ u32 RTL8821AE_PHY_REG_ARRAY_PG[] = {
 	1, 0, 0, 0x00000c44, 0x0000ffff, 0x00002022
 };
 
-u32 RTL8821AE_PHY_REG_ARRAY_PGLEN =
-		sizeof(RTL8821AE_PHY_REG_ARRAY_PG) / sizeof(u32);
+u32 RTL8821AE_PHY_REG_ARRAY_PGLEN = ARRAY_SIZE(RTL8821AE_PHY_REG_ARRAY_PG);
 
 u32 RTL8812AE_RADIOA_ARRAY[] = {
 		0x000, 0x00010000,
@@ -927,7 +923,7 @@ u32 RTL8812AE_RADIOA_ARRAY[] = {
 		0x018, 0x0001712A,
 };
 
-u32 RTL8812AE_RADIOA_1TARRAYLEN = sizeof(RTL8812AE_RADIOA_ARRAY) / sizeof(u32);
+u32 RTL8812AE_RADIOA_1TARRAYLEN = ARRAY_SIZE(RTL8812AE_RADIOA_ARRAY);
 
 u32 RTL8812AE_RADIOB_ARRAY[] = {
 		0x056, 0x00051CF2,
@@ -1335,7 +1331,7 @@ u32 RTL8812AE_RADIOB_ARRAY[] = {
 		0x008, 0x00008400,
 };
 
-u32 RTL8812AE_RADIOB_1TARRAYLEN = sizeof(RTL8812AE_RADIOB_ARRAY) / sizeof(u32);
+u32 RTL8812AE_RADIOB_1TARRAYLEN = ARRAY_SIZE(RTL8812AE_RADIOB_ARRAY);
 
 u32 RTL8821AE_RADIOA_ARRAY[] = {
 		0x018, 0x0001712A,
@@ -1929,7 +1925,7 @@ u32 RTL8821AE_RADIOA_ARRAY[] = {
 
 };
 
-u32 RTL8821AE_RADIOA_1TARRAYLEN = sizeof(RTL8821AE_RADIOA_ARRAY) / sizeof(u32);
+u32 RTL8821AE_RADIOA_1TARRAYLEN = ARRAY_SIZE(RTL8821AE_RADIOA_ARRAY);
 
 u32 RTL8812AE_MAC_REG_ARRAY[] = {
 		0x010, 0x0000000C,
@@ -2041,7 +2037,7 @@ u32 RTL8812AE_MAC_REG_ARRAY[] = {
 		0x718, 0x00000040,
 };
 
-u32 RTL8812AE_MAC_1T_ARRAYLEN = sizeof(RTL8812AE_MAC_REG_ARRAY) / sizeof(u32);
+u32 RTL8812AE_MAC_1T_ARRAYLEN = ARRAY_SIZE(RTL8812AE_MAC_REG_ARRAY);
 
 u32 RTL8821AE_MAC_REG_ARRAY[] = {
 		0x428, 0x0000000A,
@@ -2143,7 +2139,7 @@ u32 RTL8821AE_MAC_REG_ARRAY[] = {
 		0x718, 0x00000040,
 };
 
-u32 RTL8821AE_MAC_1T_ARRAYLEN = sizeof(RTL8821AE_MAC_REG_ARRAY) / sizeof(u32);
+u32 RTL8821AE_MAC_1T_ARRAYLEN = ARRAY_SIZE(RTL8821AE_MAC_REG_ARRAY);
 
 u32 RTL8812AE_AGC_TAB_ARRAY[] = {
 	0x80000001, 0x00000000, 0x40000000, 0x00000000,
@@ -2479,8 +2475,7 @@ u32 RTL8812AE_AGC_TAB_ARRAY[] = {
 		0xE50, 0x00000020,
 };
 
-u32 RTL8812AE_AGC_TAB_1TARRAYLEN =
-	sizeof(RTL8812AE_AGC_TAB_ARRAY) / sizeof(u32);
+u32 RTL8812AE_AGC_TAB_1TARRAYLEN = ARRAY_SIZE(RTL8812AE_AGC_TAB_ARRAY);
 
 u32 RTL8821AE_AGC_TAB_ARRAY[] = {
 		0x81C, 0xBF000001,
@@ -2676,8 +2671,7 @@ u32 RTL8821AE_AGC_TAB_ARRAY[] = {
 		0xC50, 0x00000020,
 };
 
-u32 RTL8821AE_AGC_TAB_1TARRAYLEN =
-	sizeof(RTL8821AE_AGC_TAB_ARRAY) / sizeof(u32);
+u32 RTL8821AE_AGC_TAB_1TARRAYLEN = ARRAY_SIZE(RTL8821AE_AGC_TAB_ARRAY);
 
 /******************************************************************************
 *                           TXPWR_LMT.TXT
@@ -3250,7 +3244,7 @@ u8 *RTL8812AE_TXPWR_LMT[] = {
 	"MKK", "5G", "80M", "VHT", "2T", "155", "63"
 };
 
-u32 RTL8812AE_TXPWR_LMT_ARRAY_LEN = sizeof(RTL8812AE_TXPWR_LMT) / sizeof(u8 *);
+u32 RTL8812AE_TXPWR_LMT_ARRAY_LEN = ARRAY_SIZE(RTL8812AE_TXPWR_LMT);
 
 u8 *RTL8821AE_TXPWR_LMT[] = {
 	"FCC", "2.4G", "20M", "CCK", "1T", "01", "32",
@@ -3819,4 +3813,4 @@ u8 *RTL8821AE_TXPWR_LMT[] = {
 	"MKK", "5G", "80M", "VHT", "2T", "155", "63"
 };
 
-u32 RTL8821AE_TXPWR_LMT_ARRAY_LEN = sizeof(RTL8821AE_TXPWR_LMT) / sizeof(u8 *);
+u32 RTL8821AE_TXPWR_LMT_ARRAY_LEN = ARRAY_SIZE(RTL8821AE_TXPWR_LMT);