linux-kernel - Re: [rtc-linux] [PATCH v3 2/3] rtc: mediatek: Add MT6397 RTC driver

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Date:	Tue, 5 May 2015 22:00:10 +0200
From:	Alexandre Belloni <alexandre.belloni@...e-electrons.com>
To:	Eddie Huang <eddie.huang@...iatek.com>
Cc:	Lee Jones <lee.jones@...aro.org>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tomasz Figa <tfiga@...gle.com>,
	Uwe Kleine-König <kernel@...gutronix.de>,
	srv_heupstream@...iatek.com, Samuel Ortiz <sameo@...ux.intel.com>,
	Greg KH <gregkh@...uxfoundation.org>,
	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org,
	rtc-linux@...glegroups.com, linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	Tianping Fang <tianping.fang@...iatek.com>
Subject: Re: [rtc-linux] [PATCH v3 2/3] rtc: mediatek: Add MT6397 RTC driver

Hi,

This looks mostly good. Could you align the wrapped function parameters
to the open parenthesis (use checkpatch --strict)?

On 28/04/2015 at 15:35:55 +0800, Eddie Huang wrote :
> +static int mtk_rtc_write_trigger(struct mt6397_rtc *rtc)
> +{
> +	unsigned long timeout = jiffies + HZ;
> +	int ret;
> +	u32 data;
> +
> +	ret = regmap_write(rtc->regmap, rtc->addr_base + RTC_WRTGR, 1);
> +	if (ret < 0)
> +		return ret;
> +
> +	do {
> +		cpu_relax();
> +		ret = regmap_read(rtc->regmap, rtc->addr_base + RTC_BBPU,
> +				&data);
> +		if (ret < 0)
> +			goto exit;
> +	} while ((data & RTC_BBPU_CBUSY) && time_after(timeout, jiffies));
> +

Shouldn't you return -ETIMEDOUT if the loop breaks because of time_after?

Thanks,

-- 
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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