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Message-ID: <20200311021122.GA13338@gofer.mess.org>
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
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