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clockevents: Adjust timer interval when frequency changes 

clockevent devices in periodic mode are not updated when the frequency
of the device changes. Issue a dev->set_mode() callback which forces
the device to reevaluate the timer settings.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Michal Simek <michal.simek@xilinx.com>
Link: http://lkml.kernel.org/r/1391466877-28908-3-git-send-email-soren.brinkmann@xilinx.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Soren Brinkmann 2014-02-03 14:34:32 -08:00 committed by Thomas Gleixner
parent 627ee7947e
commit fe79a9ba11
1 changed files with 6 additions and 3 deletions
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9
kernel/time/clockevents.c
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@ -443,10 +443,13 @@ int __clockevents_update_freq(struct clock_event_device *dev, u32 freq)
{
clockevents_config(dev, freq);
if (dev->mode != CLOCK_EVT_MODE_ONESHOT)
return 0;
if (dev->mode == CLOCK_EVT_MODE_ONESHOT)
return clockevents_program_event(dev, dev->next_event, false);
return clockevents_program_event(dev, dev->next_event, false);
if (dev->mode == CLOCK_EVT_MODE_PERIODIC)
dev->set_mode(CLOCK_EVT_MODE_PERIODIC, dev);
return 0;
}
/**