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[1/2] rtlwifi: btcoexist: Fix breakage of ant_sel for rtl8723be

Message ID 20170904175134.8331-2-Larry.Finger@lwfinger.net (mailing list archive)
State Accepted
Commit a33fcba6ec01efcca33b1afad91057020f247f15
Delegated to: Kalle Valo
Headers show

Commit Message

Larry Finger Sept. 4, 2017, 5:51 p.m. UTC
In commit bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when
hw initialisation done"), there is an additional error when the module
parameter ant_sel is used to select the auxilary antenna. The error is
that the antenna selection is not checked when writing the antenna
selection register.

Fixes: bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when hw initialisation done")
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Cc: Stable <stable@vger.kernel.org> # 4.12+
---

Kalle,

This material is intended for kernel 4.14.
---
 drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Comments

Kalle Valo Sept. 7, 2017, 12:56 p.m. UTC | #1
Larry Finger <Larry.Finger@lwfinger.net> wrote:

> In commit bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when
> hw initialisation done"), there is an additional error when the module
> parameter ant_sel is used to select the auxilary antenna. The error is
> that the antenna selection is not checked when writing the antenna
> selection register.
> 
> Fixes: bcd37f4a0831 ("rtlwifi: btcoex: 23b 2ant: let bt transmit when hw initialisation done")
> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
> Cc: Ping-Ke Shih <pkshih@realtek.com>
> Cc: Yan-Hsuan Chuang <yhchuang@realtek.com>
> Cc: Birming Chiu <birming@realtek.com>
> Cc: Shaofu <shaofu@realtek.com>
> Cc: Steven Ting <steventing@realtek.com>
> Cc: Stable <stable@vger.kernel.org> # 4.12+

2 patches applied to wireless-drivers.git, thanks.

a33fcba6ec01 rtlwifi: btcoexist: Fix breakage of ant_sel for rtl8723be
6d6226928369 rtlwifi: btcoexist: Fix antenna selection code
diff mbox

Patch

diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
index 31965f0ef69d..e8f07573aed9 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b2ant.c
@@ -1183,7 +1183,10 @@  static void btc8723b2ant_set_ant_path(struct btc_coexist *btcoexist,
 		}
 
 		/* fixed internal switch S1->WiFi, S0->BT */
-		btcoexist->btc_write_4byte(btcoexist, 0x948, 0x0);
+		if (board_info->btdm_ant_pos == BTC_ANTENNA_AT_MAIN_PORT)
+			btcoexist->btc_write_2byte(btcoexist, 0x948, 0x0);
+		else
+			btcoexist->btc_write_2byte(btcoexist, 0x948, 0x280);
 
 		switch (antpos_type) {
 		case BTC_ANT_WIFI_AT_MAIN: