linux-kernel - Re: [PATCH] Input: Delete an unnecessary check before the function call "input_free

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Message-ID: <20150211181128.GC29440@dtor-ws>
Date:	Wed, 11 Feb 2015 10:11:28 -0800
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc:	linux-input@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] Input: Delete an unnecessary check before the function
 call "input_free_device"

On Thu, Feb 05, 2015 at 05:40:20PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Thu, 5 Feb 2015 17:35:35 +0100
> 
> The input_free_device() function tests whether its argument is NULL and then
> returns immediately. Thus the test around the call is not needed.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>

Applied, thank you.

> ---
>  drivers/input/joystick/adi.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/input/joystick/adi.c b/drivers/input/joystick/adi.c
> index b784257..d09cefa 100644
> --- a/drivers/input/joystick/adi.c
> +++ b/drivers/input/joystick/adi.c
> @@ -535,8 +535,7 @@ static int adi_connect(struct gameport *gameport, struct gameport_driver *drv)
>  		}
>  	}
>   fail2:	for (i = 0; i < 2; i++)
> -		if (port->adi[i].dev)
> -			input_free_device(port->adi[i].dev);
> +		input_free_device(port->adi[i].dev);
>  	gameport_close(gameport);
>   fail1:	gameport_set_drvdata(gameport, NULL);
>  	kfree(port);
> -- 
> 2.2.2
> 

-- 
Dmitry
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