Unverified Commit 70c93b02 authored by Nick Hu's avatar Nick Hu Committed by Alexandre Ghiti
Browse files

clocksource/drivers/timer-riscv: Stop stimecmp when cpu hotplug 



Stop the timer when the cpu is going to be offline otherwise the
timer interrupt may be pending while performing power-down.

Suggested-by: default avatarAnup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/lkml/20240829033904.477200-3-nick.hu@sifive.com/T/#u


Signed-off-by: default avatarNick Hu <nick.hu@sifive.com>
Reviewed-by: default avatarAnup Patel <anup@brainfault.org>
Acked-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20250219114135.27764-3-nick.hu@sifive.com


Signed-off-by: default avatarAlexandre Ghiti <alexghiti@rivosinc.com>
parent ffef54ad

drivers/clocksource/timer-riscv.c

+6 −0
Original line number Diff line number Diff line
@@ -126,7 +126,13 @@ static int riscv_timer_starting_cpu(unsigned int cpu) 


static int riscv_timer_dying_cpu(unsigned int cpu)

{

	/*

	 * Stop the timer when the cpu is going to be offline otherwise

	 * the timer interrupt may be pending while performing power-down.

	 */

	riscv_clock_event_stop();

	disable_percpu_irq(riscv_clock_event_irq);



	return 0;

}