redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

clocksource/drivers/timer-gx6605s: Fixup counter reload 

[ Upstream commit bc6717d55d ]

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>
5.4-rM2-2.2.x-imx-squashed
Guo Ren 2020-08-18 07:31:17 +00:00 committed by Greg Kroah-Hartman
parent 3d54a640e2
commit 688aa0e0aa
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/clocksource/timer-gx6605s.c
View File

@ -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);