linux-kernel - [PATCH 01/16] staging: rtl8723bs: simplify function selecting channel group

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Date:   Wed, 21 Jul 2021 15:37:08 +0200
From:   Fabio Aiuto <fabioaiuto83@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     hdegoede@...hat.com, Larry.Finger@...inger.net,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: [PATCH 01/16] staging: rtl8723bs: simplify function selecting channel group

simplify function Hal_GetChnlGroup8723B(). It returns
an unused and unnecessary bool value telling which
band the device works on. Since we work only on
2.4Ghz band and the useful return value is the
second function argument we convert the return type to
void.

remove 5Ghz dead code either (for channel > 14).

Signed-off-by: Fabio Aiuto <fabioaiuto83@...il.com>
---
 .../staging/rtl8723bs/hal/rtl8723b_hal_init.c | 62 ++++---------------
 1 file changed, 12 insertions(+), 50 deletions(-)

diff --git a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
index 059d3050acc6..bd0e9f05eb5c 100644
--- a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
+++ b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
@@ -2061,56 +2061,18 @@ s32 rtl8723b_InitLLTTable(struct adapter *padapter)
 	return ret;
 }
 
-static bool Hal_GetChnlGroup8723B(u8 Channel, u8 *pGroup)
-{
-	bool bIn24G = true;
-
-	if (Channel <= 14) {
-		bIn24G = true;
-
-		if (1  <= Channel && Channel <= 2)
-			*pGroup = 0;
-		else if (3  <= Channel && Channel <= 5)
-			*pGroup = 1;
-		else if (6  <= Channel && Channel <= 8)
-			*pGroup = 2;
-		else if (9  <= Channel && Channel <= 11)
-			*pGroup = 3;
-		else if (12 <= Channel && Channel <= 14)
-			*pGroup = 4;
-	} else {
-		bIn24G = false;
-
-		if (36   <= Channel && Channel <=  42)
-			*pGroup = 0;
-		else if (44   <= Channel && Channel <=  48)
-			*pGroup = 1;
-		else if (50   <= Channel && Channel <=  58)
-			*pGroup = 2;
-		else if (60   <= Channel && Channel <=  64)
-			*pGroup = 3;
-		else if (100  <= Channel && Channel <= 106)
-			*pGroup = 4;
-		else if (108  <= Channel && Channel <= 114)
-			*pGroup = 5;
-		else if (116  <= Channel && Channel <= 122)
-			*pGroup = 6;
-		else if (124  <= Channel && Channel <= 130)
-			*pGroup = 7;
-		else if (132  <= Channel && Channel <= 138)
-			*pGroup = 8;
-		else if (140  <= Channel && Channel <= 144)
-			*pGroup = 9;
-		else if (149  <= Channel && Channel <= 155)
-			*pGroup = 10;
-		else if (157  <= Channel && Channel <= 161)
-			*pGroup = 11;
-		else if (165  <= Channel && Channel <= 171)
-			*pGroup = 12;
-		else if (173  <= Channel && Channel <= 177)
-			*pGroup = 13;
-	}
-	return bIn24G;
+static void Hal_GetChnlGroup8723B(u8 Channel, u8 *pGroup)
+{
+	if (1  <= Channel && Channel <= 2)
+		*pGroup = 0;
+	else if (3  <= Channel && Channel <= 5)
+		*pGroup = 1;
+	else if (6  <= Channel && Channel <= 8)
+		*pGroup = 2;
+	else if (9  <= Channel && Channel <= 11)
+		*pGroup = 3;
+	else if (12 <= Channel && Channel <= 14)
+		*pGroup = 4;
 }
 
 void Hal_InitPGData(struct adapter *padapter, u8 *PROMContent)
-- 
2.20.1