In order to avoid waking up the system in a low power mode, the clocksource should not generate interrupts anymore. Disable the PIT timer interrupt when changing into the CLOCK_EVT_MODE_SHUTDOWN mode.
Signed-off-by: Stefan Agner <[email protected]> --- drivers/clocksource/vf_pit_timer.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c index a918bc4..eb354b4 100644 --- a/drivers/clocksource/vf_pit_timer.c +++ b/drivers/clocksource/vf_pit_timer.c @@ -89,10 +89,15 @@ static int pit_set_next_event(unsigned long delta, static void pit_set_mode(enum clock_event_mode mode, struct clock_event_device *evt) { + switch (mode) { case CLOCK_EVT_MODE_PERIODIC: pit_set_next_event(cycle_per_jiffy, evt); break; + case CLOCK_EVT_MODE_SHUTDOWN: + case CLOCK_EVT_MODE_UNUSED: + pit_timer_disable(); + break; default: break; } -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
