linux-kernel - Re: [PATCH RESEND] HID: wacom: Remove comparison of u8 mode with zero and simplify.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 12 Jul 2017 09:39:17 +0200
From:   Benjamin Tissoires <benjamin.tissoires@...hat.com>
To:     Christos Gkekas <chris.gekas@...il.com>
Cc:     Joe Perches <joe@...ches.com>, Jiri Kosina <jikos@...nel.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] HID: wacom: Remove comparison of u8 mode with
 zero and simplify.

On Jul 08 2017 or thereabouts, Christos Gkekas wrote:
> Variable mode in method wacom_show_remote_mode() is defined as u8, thus
> statement (mode >= 0) is always true and should be removed, simplifying
> the logic.
> 
> Signed-off-by: Christos Gkekas <chris.gekas@...il.com>
> ---

Reviewed-by: Benjamin Tissoires <benjamin.tissoires@...hat.com>

>  drivers/hid/wacom_sys.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
> index 838c1eb..ae2408d 100644
> --- a/drivers/hid/wacom_sys.c
> +++ b/drivers/hid/wacom_sys.c
> @@ -1671,10 +1671,7 @@ static ssize_t wacom_show_remote_mode(struct kobject *kobj,
>  	u8 mode;
>  
>  	mode = wacom->led.groups[index].select;
> -	if (mode >= 0 && mode < 3)
> -		return snprintf(buf, PAGE_SIZE, "%d\n", mode);
> -	else
> -		return snprintf(buf, PAGE_SIZE, "%d\n", -1);
> +	return sprintf(buf, "%d\n", mode < 3 ? mode : -1);
>  }
>  
>  #define DEVICE_EKR_ATTR_GROUP(SET_ID)					\
> -- 
> 2.7.4
>