[PATCH v2 1/1] clocksource/timer-risc: Add riscv_clock_shutdown callback

From: Joshua Yeong
Date: Wed Nov 15 2023 - 23:08:15 EST


Add clocksource detach/shutdown callback to disable RISC-V timer interrupt when
switching out riscv timer as clock source

Signed-off-by: Joshua Yeong <joshua.yeong@xxxxxxxxxxxxxxxx>
---
drivers/clocksource/timer-riscv.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c
index 57857c0dfba9..e66dcbd66566 100644
--- a/drivers/clocksource/timer-riscv.c
+++ b/drivers/clocksource/timer-riscv.c
@@ -61,12 +61,19 @@ static int riscv_clock_next_event(unsigned long delta,
return 0;
}

+static int riscv_clock_shutdown(struct clock_event_device *evt)
+{
+ riscv_clock_event_stop();
+ return 0;
+}
+
static unsigned int riscv_clock_event_irq;
static DEFINE_PER_CPU(struct clock_event_device, riscv_clock_event) = {
.name = "riscv_timer_clockevent",
.features = CLOCK_EVT_FEAT_ONESHOT,
.rating = 100,
.set_next_event = riscv_clock_next_event,
+ .set_state_shutdown = riscv_clock_shutdown,
};

/*
--
2.25.1