linux-kernel - Re: [PATCH v8 2/7] clocksource: Add support for the Mediatek SoCs

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Date:	Wed, 11 Jun 2014 20:14:02 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Matthias Brugger <matthias.bgg@...il.com>
cc:	linux-kernel@...r.kernel.org, robh+dt@...nel.org,
	pawel.moll@....com, mark.rutland@....com,
	ijc+devicetree@...lion.org.uk, galak@...eaurora.org,
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Subject: Re: [PATCH v8 2/7] clocksource: Add support for the Mediatek SoCs

On Wed, 11 Jun 2014, Matthias Brugger wrote:
> +static void mtk_clkevt_mode(enum clock_event_mode mode,
> +				struct clock_event_device *clk)
> +{
> +	struct mtk_clock_event_device *evt = to_mtk_clk(clk);
> +
> +	mtk_clkevt_time_stop(evt, GPT_CLK_EVT);
> +
> +	switch (mode) {
> +	case CLOCK_EVT_MODE_PERIODIC:
> +		mtk_clkevt_time_setup(evt, evt->ticks_per_jiffy, GPT_CLK_EVT);
> +		mtk_clkevt_time_start(evt, true, GPT_CLK_EVT);
> +		break;
> +	case CLOCK_EVT_MODE_ONESHOT:
> +		mtk_clkevt_time_start(evt, false, GPT_CLK_EVT);

Why start the timer here? The code will call set next event right away.

> +		break;
> +	case CLOCK_EVT_MODE_UNUSED:
> +	case CLOCK_EVT_MODE_SHUTDOWN:
> +	default:
> +		/* No more interrupts will occur as source is disabled */
> +		break;
> +	}
> +}

Looks good otherwise.

Thanks,

	tglx
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