diff options
| author | Alexandre Belloni <alexandre.belloni@free-electrons.com> | 2015-01-16 10:05:51 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2015-05-27 01:03:38 +0200 |
| commit | ac34ad27fc160b5bd31c731cdaaf6e1d1890ccb2 (patch) | |
| tree | b8758f13c1a36c6a2b2067452d62b75d8277ebc3 /kernel/time | |
| parent | e83d0a4106d81dd08b70318f078f3bad6acdc110 (diff) | |
| download | talos-op-linux-ac34ad27fc160b5bd31c731cdaaf6e1d1890ccb2.tar.gz talos-op-linux-ac34ad27fc160b5bd31c731cdaaf6e1d1890ccb2.zip | |
clockevents: Do not suspend/resume if unused
There is no point in calling suspend/resume for unused clockevents as
they are already stopped and disabled.
This is really important for AT91 as the hardware is a trainwreck and
takes ages to synchronize.
Reported-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1421399151-26800-1-git-send-email-alexandre.belloni@free-electrons.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/clockevents.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/time/clockevents.c b/kernel/time/clockevents.c index 4922f1b805ea..2a5c369e50ab 100644 --- a/kernel/time/clockevents.c +++ b/kernel/time/clockevents.c @@ -638,7 +638,7 @@ void clockevents_suspend(void) struct clock_event_device *dev; list_for_each_entry_reverse(dev, &clockevent_devices, list) - if (dev->suspend) + if (dev->suspend && dev->mode != CLOCK_EVT_MODE_UNUSED) dev->suspend(dev); } @@ -650,7 +650,7 @@ void clockevents_resume(void) struct clock_event_device *dev; list_for_each_entry(dev, &clockevent_devices, list) - if (dev->resume) + if (dev->resume && dev->mode != CLOCK_EVT_MODE_UNUSED) dev->resume(dev); } |
