linux-kernel - Re: [PATCH 2/2] asus-laptop: remove unused variable

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Message-ID: <20160410032121.GD18689@dvhart-mobl5.amr.corp.intel.com>
Date:	Sat, 9 Apr 2016 20:21:21 -0700
From:	Darren Hart <dvhart@...radead.org>
To:	Giedrius Statkevičius 
	<giedrius.statkevicius@...il.com>
Cc:	corentin.chary@...il.com, acpi4asus-user@...ts.sourceforge.net,
	platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] asus-laptop: remove unused variable

On Thu, Apr 07, 2016 at 11:20:01PM +0300, Giedrius Statkevičius wrote:
> `out' was assigned value but it was never used so remove it
> 
> Signed-off-by: Giedrius Statkevičius <giedrius.statkevicius@...il.com>
> ---
>  drivers/platform/x86/asus-laptop.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/platform/x86/asus-laptop.c b/drivers/platform/x86/asus-laptop.c
> index d86d42e..39ddcee 100644
> --- a/drivers/platform/x86/asus-laptop.c
> +++ b/drivers/platform/x86/asus-laptop.c
> @@ -946,11 +946,8 @@ static ssize_t sysfs_acpi_set(struct asus_laptop *asus,
>  			      const char *method)
>  {
>  	int rv, value;
> -	int out = 0;
>  
>  	rv = parse_arg(buf, count, &value);
> -	if (rv > 0)
> -		out = value ? 1 : 0;
>  
>  	if (write_acpi_int(asus->handle, method, value))

out is indeed unused, however the rv > 0 condition is relevant as <=0 will pass
value uninitialized to write_acpi_int.

-- 
Darren Hart
Intel Open Source Technology Center