diff options
| author | Nick Hu <nick.hu@sifive.com> | 2025-02-19 19:41:35 +0800 |
|---|---|---|
| committer | Alexandre Ghiti <alexghiti@rivosinc.com> | 2025-03-18 12:59:03 +0000 |
| commit | 70c93b026ed07078e933583591aa9ca6701cd9da (patch) | |
| tree | 1bb2a0702ae5d968fe33382c2bc467d6ad5670b7 /drivers/clocksource/timer-riscv.c | |
| parent | ffef54ad41101f98ea6dd1dcd71c60bb6b7c8ee9 (diff) | |
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: Anup Patel <anup@brainfault.org>
Link: https://lore.kernel.org/lkml/20240829033904.477200-3-nick.hu@sifive.com/T/#u
Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20250219114135.27764-3-nick.hu@sifive.com
Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Diffstat (limited to 'drivers/clocksource/timer-riscv.c')
| -rw-r--r-- | drivers/clocksource/timer-riscv.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index 48ce50c5f5e6..4d7cf338824a 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -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; } |