This is a note to let you know that I've just added the patch titled
wifi: rtw88: 8821cu: Fix connection failure
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
wifi-rtw88-8821cu-fix-connection-failure.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 605d7c0b05eecb985273b1647070497142c470d3 Mon Sep 17 00:00:00 2001
From: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Date: Fri, 1 Mar 2024 00:34:13 +0200
Subject: wifi: rtw88: 8821cu: Fix connection failure
From: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
commit 605d7c0b05eecb985273b1647070497142c470d3 upstream.
Clear bit 8 of REG_SYS_STATUS1 after MAC power on.
Without this, some RTL8821CU and RTL8811CU cannot connect to any
network:
Feb 19 13:33:11 ideapad2 kernel: wlp3s0f3u2: send auth to
90:55:de:__:__:__ (try 1/3)
Feb 19 13:33:13 ideapad2 kernel: wlp3s0f3u2: send auth to
90:55:de:__:__:__ (try 2/3)
Feb 19 13:33:14 ideapad2 kernel: wlp3s0f3u2: send auth to
90:55:de:__:__:__ (try 3/3)
Feb 19 13:33:15 ideapad2 kernel: wlp3s0f3u2: authentication with
90:55:de:__:__:__ timed out
The RTL8822CU and RTL8822BU out-of-tree drivers do this as well, so do
it for all three types of chips.
Tested with RTL8811CU (Tenda U9 V2.0).
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@xxxxxxxxx>
Acked-by: Ping-Ke Shih <pkshih@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxx>
Link: https://msgid.link/aeeefad9-27c8-4506-a510-ef9a9a8731a4@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/wireless/realtek/rtw88/mac.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/net/wireless/realtek/rtw88/mac.c
+++ b/drivers/net/wireless/realtek/rtw88/mac.c
@@ -309,6 +309,13 @@ static int rtw_mac_power_switch(struct r
pwr_seq = pwr_on ? chip->pwr_on_seq : chip->pwr_off_seq;
ret = rtw_pwr_seq_parser(rtwdev, pwr_seq);
+ if (pwr_on && rtw_hci_type(rtwdev) == RTW_HCI_TYPE_USB) {
+ if (chip->id == RTW_CHIP_TYPE_8822C ||
+ chip->id == RTW_CHIP_TYPE_8822B ||
+ chip->id == RTW_CHIP_TYPE_8821C)
+ rtw_write8_clr(rtwdev, REG_SYS_STATUS1 + 1, BIT(0));
+ }
+
if (rtw_hci_type(rtwdev) == RTW_HCI_TYPE_SDIO)
rtw_write32(rtwdev, REG_SDIO_HIMR, imr);
Patches currently in stable-queue which might be from rtl8821cerfe2@xxxxxxxxx are
queue-6.6/wifi-rtw88-8821cu-fix-connection-failure.patch
