linux-kernel - Re: [PATCH] wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu

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Message-ID: <18907e6b-93b4-d850-8a17-95ad43501136@gmail.com>
Date:   Sat, 7 Jan 2023 16:17:00 +0200
From:   Bitterblue Smith <rtl8821cerfe2@...il.com>
To:     Jun ASAKA <JunASAKA@...040330.moe>, Jes.Sorensen@...il.com
Cc:     kvalo@...nel.org, davem@...emloft.net, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] wifi: rtl8xxxu: fixing transmisison failure for rtl8192eu

On 17/12/2022 05:06, Jun ASAKA wrote:
> Fixing transmission failure which results in
> "authentication with ... timed out". This can be
> fixed by disable the REG_TXPAUSE.
> 
> Signed-off-by: Jun ASAKA <JunASAKA@...040330.moe>
> ---
>  drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> index a7d76693c02d..9d0ed6760cb6 100644
> --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_8192e.c
> @@ -1744,6 +1744,11 @@ static void rtl8192e_enable_rf(struct rtl8xxxu_priv *priv)
>  	val8 = rtl8xxxu_read8(priv, REG_PAD_CTRL1);
>  	val8 &= ~BIT(0);
>  	rtl8xxxu_write8(priv, REG_PAD_CTRL1, val8);
> +
> +	/*
> +	 * Fix transmission failure of rtl8192e.
> +	 */
> +	rtl8xxxu_write8(priv, REG_TXPAUSE, 0x00);
>  }
>  
>  static s8 rtl8192e_cck_rssi(struct rtl8xxxu_priv *priv, u8 cck_agc_rpt)

By the way, you should get this into the stable kernels too:
https://www.kernel.org/doc/html/latest/process/stable-kernel-rules.html