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clocksource/cadence_ttc: Call clockevents_update_freq() with IRQs enabled 

The timer core takes care of serialization and IRQs. Hence the driver is
no longer required to disable interrupts when calling
clockevents_update_freq().

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Soren Brinkmann 2014-02-19 15:14:41 -08:00 committed by Daniel Lezcano
parent fd3f1270d2
commit 5f0ba3b462
1 changed files with 2 additions and 15 deletions
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17
drivers/clocksource/cadence_ttc_timer.c
View File

@ -321,25 +321,12 @@ static int ttc_rate_change_clockevent_cb(struct notifier_block *nb,
switch (event) {
case POST_RATE_CHANGE:
{
unsigned long flags;
/*
* clockevents_update_freq should be called with IRQ disabled on
* the CPU the timer provides events for. The timer we use is
* common to both CPUs, not sure if we need to run on both
* cores.
*/
local_irq_save(flags);
clockevents_update_freq(&ttcce->ce,
ndata->new_rate / PRESCALE);
local_irq_restore(flags);
/* update cached frequency */
ttc->freq = ndata->new_rate;
clockevents_update_freq(&ttcce->ce, ndata->new_rate / PRESCALE);
/* fall through */
}
case PRE_RATE_CHANGE:
case ABORT_RATE_CHANGE:
default: