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drivers: macintosh: rack-meter: limit idle ticks to total ticks 

Limit idle ticks to total ticks. This prevents the annoying rackmeter
leds fully ON / OFF blinking state that happens on fully idling
G5 Xserve systems.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aaro Koskinen 2016-04-10 22:53:47 +03:00 committed by Michael Ellerman
parent 7f92bc5694
commit c796d1d97c
1 changed files with 1 additions and 0 deletions
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drivers/macintosh/rack-meter.c
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@ -227,6 +227,7 @@ static void rackmeter_do_timer(struct work_struct *work)
total_idle_ticks = get_cpu_idle_time(cpu);
idle_ticks = (unsigned int) (total_idle_ticks - rcpu->prev_idle);
idle_ticks = min(idle_ticks, total_ticks);
rcpu->prev_idle = total_idle_ticks;
/* We do a very dumb calculation to update the LEDs for now,