Commit bc6717d5 authored Aug 18, 2020 by Guo Ren Committed by Daniel Lezcano Aug 24, 2020

clocksource/drivers/timer-gx6605s: Fixup counter reload



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

parent 16480515

drivers/clocksource/timer-gx6605s.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -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);

Admin message