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    Subject[PATCH 5.8 24/85] clocksource/drivers/timer-gx6605s: Fixup counter reload
    Date
    From: Guo Ren <guoren@linux.alibaba.com>

    [ Upstream commit bc6717d55d07110d8f3c6d31ec2af50c11b07091 ]

    When the timer counts to the upper limit, an overflow interrupt is
    generated, and the count is reset with the value in the TIME_INI
    register. But the software expects to start counting from 0 when
    the count overflows, so it forces TIME_INI to 0 to solve the
    potential interrupt storm problem.

    Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
    Tested-by: Xu Kai <xukai@nationalchip.com>
    Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
    Cc: Thomas Gleixner <tglx@linutronix.de>
    Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
    Link: https://lore.kernel.org/r/1597735877-71115-1-git-send-email-guoren@kernel.org
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/clocksource/timer-gx6605s.c | 1 +
    1 file changed, 1 insertion(+)

    diff --git a/drivers/clocksource/timer-gx6605s.c b/drivers/clocksource/timer-gx6605s.c
    index 80d0939d040b5..8d386adbe8009 100644
    --- a/drivers/clocksource/timer-gx6605s.c
    +++ b/drivers/clocksource/timer-gx6605s.c
    @@ -28,6 +28,7 @@ static irqreturn_t gx6605s_timer_interrupt(int irq, void *dev)
    void __iomem *base = timer_of_base(to_timer_of(ce));

    writel_relaxed(GX6605S_STATUS_CLR, base + TIMER_STATUS);
    + writel_relaxed(0, base + TIMER_INI);

    ce->event_handler(ce);

    --
    2.25.1


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