5.15-stable review patch. If anyone has any objections, please let me know.
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From: Nick Hu nick.hu@sifive.com
[ Upstream commit 70c93b026ed07078e933583591aa9ca6701cd9da ]
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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clocksource/timer-riscv.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index c51c5ed15aa75..427c92dd048c4 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -75,7 +75,13 @@ 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; }