linux-kernel - Re: [PATCH 2/2] rtc: tegra: Implement suspend clock source

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Message-ID: <20190614134251.GG15526@ulmo>
Date:   Fri, 14 Jun 2019 15:42:51 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        linux-tegra@...r.kernel.org, linux-rtc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] rtc: tegra: Implement suspend clock source

On Fri, Jun 14, 2019 at 03:35:14PM +0300, Dmitry Osipenko wrote:
> 14.06.2019 13:47, Thierry Reding пишет:
> > From: Thierry Reding <treding@...dia.com>
> > 
> > The suspend clock source for Tegra210 and earlier is currently
> > implemented in the Tegra timer driver. However, the suspend clock source
> > code accesses registers that are part of the RTC hardware block, so both
> > can step on each others' toes. In practice this isn't an issue, but
> > there is no reason why the RTC driver can't implement the clock source,
> > so move the code over to the tegra-rtc driver.
> > 
> > Signed-off-by: Thierry Reding <treding@...dia.com>
> > ---
> 
> 
> [snip]
> 
> > +static struct tegra_rtc_info *to_tegra_rtc(struct clocksource *clksrc)
> > +{
> > +	return container_of(clksrc, struct tegra_rtc_info, clksrc);
> > +}
> 
> Shouldn't hurt to inline this function explicitly because I assume that it won't get
> inlined with a certain kernel configurations, like with enabled ftracing for example.

Yeah, makes sense.

Thierry

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