linux-kernel - [PATCH 15/18] staging: rtl8723bs: remove register initializations tied to 802.11ac standard

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Date:   Sat, 19 Jun 2021 12:47:18 +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 15/18] staging: rtl8723bs: remove register initializations tied to 802.11ac standard

remove register initializations tied to 802.11ac standard which
is not supported by the device.

It's a dangerous operation, relying only on comments, but tested
on a Lenovo Ideapad MIIX 300-10IBY tablet seems to work.

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

diff --git a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
index 059d3050acc6..3a03dfb8d275 100644
--- a/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
+++ b/drivers/staging/rtl8723bs/hal/rtl8723b_hal_init.c
@@ -1718,24 +1718,12 @@ void _InitBurstPktLen_8723BS(struct adapter *Adapter)
 	struct hal_com_data *pHalData = GET_HAL_DATA(Adapter);
 
 	rtw_write8(Adapter, 0x4c7, rtw_read8(Adapter, 0x4c7)|BIT(7)); /* enable single pkt ampdu */
-	rtw_write8(Adapter, REG_RX_PKT_LIMIT_8723B, 0x18);		/* for VHT packet length 11K */
 	rtw_write8(Adapter, REG_MAX_AGGR_NUM_8723B, 0x1F);
 	rtw_write8(Adapter, REG_PIFS_8723B, 0x00);
 	rtw_write8(Adapter, REG_FWHW_TXQ_CTRL_8723B, rtw_read8(Adapter, REG_FWHW_TXQ_CTRL)&(~BIT(7)));
 	if (pHalData->AMPDUBurstMode)
 		rtw_write8(Adapter, REG_AMPDU_BURST_MODE_8723B,  0x5F);
 	rtw_write8(Adapter, REG_AMPDU_MAX_TIME_8723B, 0x70);
-
-	/*  ARFB table 9 for 11ac 5G 2SS */
-	rtw_write32(Adapter, REG_ARFR0_8723B, 0x00000010);
-	if (IS_NORMAL_CHIP(pHalData->VersionID))
-		rtw_write32(Adapter, REG_ARFR0_8723B+4, 0xfffff000);
-	else
-		rtw_write32(Adapter, REG_ARFR0_8723B+4, 0x3e0ff000);
-
-	/*  ARFB table 10 for 11ac 5G 1SS */
-	rtw_write32(Adapter, REG_ARFR1_8723B, 0x00000010);
-	rtw_write32(Adapter, REG_ARFR1_8723B+4, 0x003ff000);
 }
 
 static void ResumeTxBeacon(struct adapter *padapter)
-- 
2.20.1