linux-kernel - Re: [PATCH 03/24] Input: alps - use guard notation when pausing serio port

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Message-ID: <20240905154626.kws5h3s5tca2uaqd@pali>
Date: Thu, 5 Sep 2024 17:46:26 +0200
From: Pali Rohár <pali@...nel.org>
To: Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/24] Input: alps - use guard notation when pausing
 serio port

On Wednesday 04 September 2024 21:17:08 Dmitry Torokhov wrote:
> Using guard notation makes the code more compact and error handling
> more robust by ensuring that serio ports are resumed in all code paths
> when control leaves critical section.
> 
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>

Looks good for me.
Acked-by: Pali Rohár <pali@...nel.org>

> ---
>  drivers/input/mouse/alps.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
> index 4e37fc3f1a9e..0728b5c08f02 100644
> --- a/drivers/input/mouse/alps.c
> +++ b/drivers/input/mouse/alps.c
> @@ -1585,7 +1585,7 @@ static void alps_flush_packet(struct timer_list *t)
>  	struct alps_data *priv = from_timer(priv, t, timer);
>  	struct psmouse *psmouse = priv->psmouse;
>  
> -	serio_pause_rx(psmouse->ps2dev.serio);
> +	guard(serio_pause_rx)(psmouse->ps2dev.serio);
>  
>  	if (psmouse->pktcnt == psmouse->pktsize) {
>  
> @@ -1605,8 +1605,6 @@ static void alps_flush_packet(struct timer_list *t)
>  		}
>  		psmouse->pktcnt = 0;
>  	}
> -
> -	serio_continue_rx(psmouse->ps2dev.serio);
>  }
>  
>  static psmouse_ret_t alps_process_byte(struct psmouse *psmouse)
> -- 
> 2.46.0.469.g59c65b2a67-goog
>