Messages in this thread |  | | Date | Tue, 12 Nov 2013 17:29:45 +0100 | From | Daniel Lezcano <> | Subject | Re: [PATCH 4/7] clocksource/cadence_ttc: Adjust interval in clock notifier |
| |
On 11/08/2013 10:21 PM, Soren Brinkmann wrote: > The clockevent has to be reprogrammed if the timer's input > clock frequency changes and the timer is in periodic mode, in order to > maintain the correct timer interval. > > Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com> > --- > drivers/clocksource/cadence_ttc_timer.c | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/drivers/clocksource/cadence_ttc_timer.c b/drivers/clocksource/cadence_ttc_timer.c > index a92350b55d32..68a336038d8f 100644 > --- a/drivers/clocksource/cadence_ttc_timer.c > +++ b/drivers/clocksource/cadence_ttc_timer.c > @@ -338,6 +338,10 @@ static int ttc_rate_change_clockevent_cb(struct notifier_block *nb, > /* update cached frequency */ > ttc->freq = ndata->new_rate; > > + if (ttcce->ce.mode == CLOCK_EVT_MODE_PERIODIC) > + ttc_set_interval(ttc, DIV_ROUND_CLOSEST(ttc->freq, > + PRESCALE * HZ)); > +
Couldn't be racy ?
> /* fall through */ > } > case PRE_RATE_CHANGE: >
-- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog
-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |