From: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
To: cgel.zte@gmail.com
Cc: alexandre.belloni@bootlin.com, deng.changcheng@zte.com.cn,
lee.jones@linaro.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org,
ludovic.desroches@microchip.com, nicolas.ferre@microchip.com,
thierry.reding@gmail.com, zealci@zte.com.cn
Subject: Re: [PATCH V3] pwm: Use div64_ul instead of do_div
Date: Thu, 18 Nov 2021 10:54:18 +0100 [thread overview]
Message-ID: <20211118095418.mfodz4ubde5qsx57@pengutronix.de> (raw)
In-Reply-To: <20211118025254.163231-1-deng.changcheng@zte.com.cn>
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On Thu, Nov 18, 2021 at 02:52:54AM +0000, cgel.zte@gmail.com wrote:
> From: Changcheng Deng <deng.changcheng@zte.com.cn>
>
> do_div() does a 64-by-32 division. Here the divisor is an unsigned long
> which on some platforms is 64 bit wide. So use div64_ul instead of do_div
> to avoid a possible truncation.
>
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Changcheng Deng <deng.changcheng@zte.com.cn>
There is no S-o-b line matching the mail sender.
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | https://www.pengutronix.de/ |
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next prev parent reply other threads:[~2021-11-18 9:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-17 2:04 [PATCH] pwm: Use div64_ul instead of do_div cgel.zte
2021-11-17 11:24 ` Uwe Kleine-König
2021-11-17 12:46 ` [PATCH V2] " cgel.zte
2021-11-17 14:54 ` Uwe Kleine-König
2021-11-18 2:52 ` [PATCH V3] " cgel.zte
2021-11-18 9:54 ` Uwe Kleine-König [this message]
2021-11-18 10:09 ` [PATCH] " Russell King (Oracle)
2021-11-18 13:19 ` Nicolas Ferre
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