linux-kernel - Re: [PATCH Resend] PM: Remove unnecessary !!

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Message-ID: <CAKohpokF5k5epGoSA+JhO0=imK0gjE296bi0Rrh2sNuTOmXB_A@mail.gmail.com>
Date:	Thu, 13 Feb 2014 12:11:33 +0530
From:	Viresh Kumar <viresh.kumar@...aro.org>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	Lists linaro-kernel <linaro-kernel@...ts.linaro.org>,
	Patch Tracking <patches@...aro.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCH Resend] PM: Remove unnecessary !!

On 22 January 2014 11:34, Viresh Kumar <viresh.kumar@...aro.org> wrote:
> Double ! or !! are normally required to get 0 or 1 out of a expression. A
> comparision always returns 0 or 1 and hence there is no need to apply double !
> over it again.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  kernel/power/suspend.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c
> index 62ee437..90b3d93 100644
> --- a/kernel/power/suspend.c
> +++ b/kernel/power/suspend.c
> @@ -39,7 +39,7 @@ static const struct platform_suspend_ops *suspend_ops;
>
>  static bool need_suspend_ops(suspend_state_t state)
>  {
> -       return !!(state > PM_SUSPEND_FREEZE);
> +       return state > PM_SUSPEND_FREEZE;
>  }
>
>  static DECLARE_WAIT_QUEUE_HEAD(suspend_freeze_wait_head);

Ping!!
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