Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Date:   Thu, 18 May 2023 11:22:02 -0600
From:   Raul E Rangel <rrangel@chromium.org>
To:     Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc:     linux-input@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/7] Input: libps2 - fix NAK handling
Message-ID: <ZGZeuuh1KmWsMz5q@google.com>
References: <20230511185252.386941-1-dmitry.torokhov@gmail.com>
 <20230511185252.386941-5-dmitry.torokhov@gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230511185252.386941-5-dmitry.torokhov@gmail.com>
Precedence: bulk

On Thu, May 11, 2023 at 11:52:44AM -0700, Dmitry Torokhov wrote:
> Do not try to process "resend" or "reject" responses from the device
> as normal response data for a command.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> ---
>  drivers/input/serio/libps2.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
> index d09450eca9a7..14b70a78875d 100644
> --- a/drivers/input/serio/libps2.c
> +++ b/drivers/input/serio/libps2.c
> @@ -445,7 +445,7 @@ bool ps2_handle_ack(struct ps2dev *ps2dev, u8 data)
>  	ps2dev->flags &= ~PS2_FLAG_ACK;
>  	wake_up(&ps2dev->wait);
>  
> -	if (data != PS2_RET_ACK)
> +	if (!ps2dev->nak && data != PS2_RET_ACK)
>  		ps2_handle_response(ps2dev, data);
>  
>  	return true;
Reviewed-by: Raul E Rangel <rrangel@chromium.org>