[4.19,080/229] wifi: rtl8xxxu: gen2: Fix mistake in path B IQ calibration

Message ID 20221024113001.658750801@linuxfoundation.org
State New
Headers
Series None |

Commit Message

Greg KH Oct. 24, 2022, 11:29 a.m. UTC
  From: Bitterblue Smith <rtl8821cerfe2@gmail.com>

[ Upstream commit e963a19c64ac0d2f8785d36a27391abd91ac77aa ]

Found by comparing with the vendor driver. Currently this affects
only the RTL8192EU, which is the only gen2 chip with 2 TX paths
supported by this driver. It's unclear what kind of effect the
mistake had in practice, since I don't have any RTL8192EU devices
to test it.

Fixes: e1547c535ede ("rtl8xxxu: First stab at adding IQK calibration for 8723bu parts")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/30a59f3a-cfa9-8379-7af0-78a8f4c77cfd@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
  

Patch

diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
index ccd76c1da40c..38f06ee98b35 100644
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -2930,12 +2930,12 @@  bool rtl8xxxu_gen2_simularity_compare(struct rtl8xxxu_priv *priv,
 		}
 
 		if (!(simubitmap & 0x30) && priv->tx_paths > 1) {
-			/* path B RX OK */
+			/* path B TX OK */
 			for (i = 4; i < 6; i++)
 				result[3][i] = result[c1][i];
 		}
 
-		if (!(simubitmap & 0x30) && priv->tx_paths > 1) {
+		if (!(simubitmap & 0xc0) && priv->tx_paths > 1) {
 			/* path B RX OK */
 			for (i = 6; i < 8; i++)
 				result[3][i] = result[c1][i];