linux-kernel - Re: [PATCH v8 04/12] ir-rx51: Use 64-bit division macro

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Date:   Wed, 11 Mar 2020 02:11:22 +0000
From:   Sean Young <sean@...s.org>
To:     Guru Das Srinagesh <gurus@...eaurora.org>
Cc:     linux-pwm@...r.kernel.org,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König <uwe@...ine-koenig.org>,
        Subbaraman Narayanamurthy <subbaram@...eaurora.org>,
        linux-kernel@...r.kernel.org,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Richard Fontana <rfontana@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Allison Randal <allison@...utok.net>,
        linux-media@...r.kernel.org
Subject: Re: [PATCH v8 04/12] ir-rx51: Use 64-bit division macro

On Tue, Mar 10, 2020 at 06:41:13PM -0700, Guru Das Srinagesh wrote:
> Since the PWM framework is switching struct pwm_state.period's datatype
> to u64, prepare for this transition by using DIV_ROUND_CLOSEST_ULL to
> handle a 64-bit dividend.
> 
> Cc: Mauro Carvalho Chehab <mchehab@...nel.org>
> Cc: Richard Fontana <rfontana@...hat.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Kate Stewart <kstewart@...uxfoundation.org>
> Cc: Allison Randal <allison@...utok.net>
> Cc: linux-media@...r.kernel.org

Acked-by: Sean Young <sean@...s.org>

> 
> Signed-off-by: Guru Das Srinagesh <gurus@...eaurora.org>
> ---
>  drivers/media/rc/ir-rx51.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/media/rc/ir-rx51.c b/drivers/media/rc/ir-rx51.c
> index 8574eda..9a5dfd7 100644
> --- a/drivers/media/rc/ir-rx51.c
> +++ b/drivers/media/rc/ir-rx51.c
> @@ -241,7 +241,8 @@ static int ir_rx51_probe(struct platform_device *dev)
>  	}
>  
>  	/* Use default, in case userspace does not set the carrier */
> -	ir_rx51.freq = DIV_ROUND_CLOSEST(pwm_get_period(pwm), NSEC_PER_SEC);
> +	ir_rx51.freq = DIV_ROUND_CLOSEST_ULL(pwm_get_period(pwm),
> +			NSEC_PER_SEC);
>  	pwm_put(pwm);
>  
>  	hrtimer_init(&ir_rx51.timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project