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Commit 5f0ba3b4 authored by Soren Brinkmann's avatar Soren Brinkmann Committed by Daniel Lezcano
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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: default avatarSoren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: default avatarMichal Simek <michal.simek@xilinx.com>
parent fd3f1270

drivers/clocksource/cadence_ttc_timer.c

+2 −15
Original line number Diff line number Diff line
@@ -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: