linux-kernel - Re: [PATCH] Input: alps: Drop unlikely before IS_ERR(_OR

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Message-ID: <20190605144240.pfrvlgxsdpacpwxf@pali>
Date:   Wed, 5 Jun 2019 16:42:40 +0200
From:   Pali Rohár <pali.rohar@...il.com>
To:     Kefeng Wang <wangkefeng.wang@...wei.com>
Cc:     linux-kernel@...r.kernel.org,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        linux-input@...r.kernel.org
Subject: Re: [PATCH] Input: alps: Drop unlikely before IS_ERR(_OR_NULL)

On Wednesday 05 June 2019 22:24:28 Kefeng Wang wrote:
> IS_ERR(_OR_NULL) already contain an 'unlikely' compiler flag,
> so no need to do that again from its callers. Drop it.

Hi! I already reviewed this patch and rejected it, see:
https://patchwork.kernel.org/patch/10817475/

> Cc: "Pali Rohár" <pali.rohar@...il.com>
> Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Cc: linux-input@...r.kernel.org
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> ---
>  drivers/input/mouse/alps.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
> index 0a6f7ca883e7..791ef0f826c5 100644
> --- a/drivers/input/mouse/alps.c
> +++ b/drivers/input/mouse/alps.c
> @@ -1478,7 +1478,7 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
>  		/* On V2 devices the DualPoint Stick reports bare packets */
>  		dev = priv->dev2;
>  		dev2 = psmouse->dev;
> -	} else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
> +	} else if (IS_ERR_OR_NULL(priv->dev3)) {
>  		/* Register dev3 mouse if we received PS/2 packet first time */
>  		if (!IS_ERR(priv->dev3))
>  			psmouse_queue_work(psmouse, &priv->dev3_register_work,

-- 
Pali Rohár
pali.rohar@...il.com