diff options
| author | Soren Brinkmann <soren.brinkmann@xilinx.com> | 2014-02-03 23:34:32 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-02-07 15:34:29 +0100 |
| commit | fe79a9ba11962a603fb6af68fcb476e64031e46c (patch) | |
| tree | e637be5acb585c8910173d6e1d779bb57feebf26 /kernel | |
| parent | clockevents: Serialize calls to clockevents_update_freq() in the core (diff) | |
| download | linux-fe79a9ba11962a603fb6af68fcb476e64031e46c.tar.xz linux-fe79a9ba11962a603fb6af68fcb476e64031e46c.zip | |
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>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/clockevents.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c index 641d91003a45..f85e5fda9c66 100644 --- a/kernel/time/clockevents.c +++ b/kernel/time/clockevents.c @@ -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); + + if (dev->mode == CLOCK_EVT_MODE_PERIODIC) + dev->set_mode(CLOCK_EVT_MODE_PERIODIC, dev); - return clockevents_program_event(dev, dev->next_event, false); + return 0; } /** |