linux-kernel - Re: [PATCH v2 2/2] rtc: sprd: Add Spreadtrum RTC driver

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Date:   Thu, 9 Nov 2017 02:26:53 +0100
From:   Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:     Baolin Wang <baolin.wang@...eadtrum.com>
Cc:     a.zummo@...ertech.it, robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-rtc@...r.kernel.org, broonie@...nel.org,
        baolin.wang@...aro.org
Subject: Re: [PATCH v2 2/2] rtc: sprd: Add Spreadtrum RTC driver

Hi,

On 08/11/2017 at 17:16:15 +0800, Baolin Wang wrote:
> +static int sprd_rtc_read_time(struct device *dev, struct rtc_time *tm)
> +{
> +	struct sprd_rtc *rtc = dev_get_drvdata(dev);
> +	time64_t secs;
> +	int ret;
> +

I would have expected a check for SPRD_RTC_POWER_RESET_FLAG here.


> +	ret = sprd_rtc_get_secs(rtc, SPRD_RTC_TIME, &secs);
> +	if (ret)
> +		return ret;
> +
> +	rtc_time64_to_tm(secs, tm);
> +	return rtc_valid_tm(tm);
> +}
> +
> +static int sprd_rtc_set_time(struct device *dev, struct rtc_time *tm)
> +{
> +	struct sprd_rtc *rtc = dev_get_drvdata(dev);
> +	time64_t secs = rtc_tm_to_time64(tm);
> +

And you need to reset SPRD_RTC_POWER_RESET_FLAG here

> +	return sprd_rtc_set_secs(rtc, SPRD_RTC_TIME, secs);
> +}
> +
-- 
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com