linux-kernel - Re: [PATCH 2/2] clocksource: exynos_mct: Clear timer interrupt when shutdown

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Message-ID: <CAJKOXPeHMTZn0h8aVU4btg736XyHxpYHBFy1Up7jZgmQa17gtg@mail.gmail.com>
Date:   Mon, 11 Feb 2019 09:47:53 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Stuart Menefy <stuart.menefy@...hembedded.com>
Cc:     "linux-samsung-soc@...r.kernel.org" 
        <linux-samsung-soc@...r.kernel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kukjin Kim <kgene@...nel.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] clocksource: exynos_mct: Clear timer interrupt when shutdown

On Sun, 10 Feb 2019 at 23:51, Stuart Menefy
<stuart.menefy@...hembedded.com> wrote:
>
> When shutting down the timer, ensure that after we have stopped the
> timer any pending interrupts are cleared. This fixes a problem when
> suspending, as interrupts are disabled before the timer is stopped,
> so the timer interrupt may still be asserted, preventing the system
> entering a low power state when the wfi is executed.
>
> Signed-off-by: Stuart Menefy <stuart.menefy@...hembedded.com>
> ---
>  drivers/clocksource/exynos_mct.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof