staging: rtl8723bs: 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2 files changed, 6 insertions, 6 deletions

diff --git a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
index 9f0921b2779a..355ce9b19d1c 100644
--- a/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
+++ b/drivers/staging/rtl8723bs/core/rtw_mlme_ext.c
@@ -17,6 +17,7 @@
 #include <drv_types.h>
 #include <rtw_debug.h>
 #include <rtw_wifi_regd.h>
+#include <linux/kernel.h>
 
 
 static struct mlme_handler mlme_sta_tbl[] = {
@@ -559,7 +560,7 @@ void mgt_dispatcher(struct adapter *padapter, union recv_frame *precv_frame)
 
 	index = GetFrameSubType(pframe) >> 4;
 
-	if (index >= (sizeof(mlme_sta_tbl) / sizeof(struct mlme_handler))) {
+	if (index >= ARRAY_SIZE(mlme_sta_tbl)) {
 		RT_TRACE(_module_rtl871x_mlme_c_, _drv_err_, ("Currently we do not support reserved sub-fr-type =%d\n", index));
 		return;
 	}
@@ -2224,7 +2225,7 @@ unsigned int OnAction(struct adapter *padapter, union recv_frame *precv_frame)
 
 	category = frame_body[0];
 
-	for (i = 0; i < sizeof(OnAction_tbl)/sizeof(struct action_handler); i++) {
+	for (i = 0; i < ARRAY_SIZE(OnAction_tbl); i++) {
 		ptable = &OnAction_tbl[i];
 
 		if (category == ptable->num)
diff --git a/drivers/staging/rtl8723bs/core/rtw_rf.c b/drivers/staging/rtl8723bs/core/rtw_rf.c
index b87ea4e388c0..07f5577cc073 100644
--- a/drivers/staging/rtl8723bs/core/rtw_rf.c
+++ b/drivers/staging/rtl8723bs/core/rtw_rf.c
@@ -15,6 +15,7 @@
 #define _RTW_RF_C_
 
 #include <drv_types.h>
+#include <linux/kernel.h>
 
 
 struct ch_freq {
@@ -44,20 +45,18 @@ static struct ch_freq ch_freq_map[] = {
 	{216, 5080},/* Japan, means J16 */
 };
 
-static int ch_freq_map_num = (sizeof(ch_freq_map) / sizeof(struct ch_freq));
-
 u32 rtw_ch2freq(u32 channel)
 {
 	u8 i;
 	u32 freq = 0;
 
-	for (i = 0; i < ch_freq_map_num; i++) {
+	for (i = 0; i < ARRAY_SIZE(ch_freq_map); i++) {
 		if (channel == ch_freq_map[i].channel) {
 			freq = ch_freq_map[i].frequency;
 				break;
 		}
 	}
-	if (i == ch_freq_map_num)
+	if (i == ARRAY_SIZE(ch_freq_map))
 		freq = 2412;
 
 	return freq;