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clockevents: Check state instead of mode in suspend/resume path 

CLOCK_EVT_MODE_* macros are present for backward compatibility (as most
of the drivers are still using old ->set_mode() interface).

These macro's shouldn't be used anymore in code, that is common to both
driver interfaces, i.e. ->set_mode() and ->set_state_*().

Drivers implementing ->set_state_*() interface, which have their
clkevt->mode set to 0 (clkevt device structures are normally globally
defined), will not participate in suspend/resume as they will always be
marked as UNUSED.

Fix this by checking state of the clockevent device instead of mode,
which is updated for both the interfaces.

Fixes: ac34ad27fc ("clockevents: Do not suspend/resume if unused")
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linaro-kernel@lists.linaro.org
Cc: alexandre.belloni@free-electrons.com
Cc: sylvain.rochet@finsecur.com
Link: http://lkml.kernel.org/r/a1964eef6e8a47d02b1ff9083c6c91f73f0ff643.1434537215.git.viresh.kumar@linaro.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Viresh Kumar 2015-06-17 16:04:46 +05:30 committed by Thomas Gleixner
parent 0c4a5fc95b
commit a9d20988ac
1 changed files with 2 additions and 2 deletions
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4
kernel/time/clockevents.c
View File

@ -639,7 +639,7 @@ void clockevents_suspend(void)
struct clock_event_device *dev;
list_for_each_entry_reverse(dev, &clockevent_devices, list)
if (dev->suspend && dev->mode != CLOCK_EVT_MODE_UNUSED)
if (dev->suspend && !clockevent_state_detached(dev))
dev->suspend(dev);
}
@ -651,7 +651,7 @@ void clockevents_resume(void)
struct clock_event_device *dev;
list_for_each_entry(dev, &clockevent_devices, list)
if (dev->resume && dev->mode != CLOCK_EVT_MODE_UNUSED)
if (dev->resume && !clockevent_state_detached(dev))
dev->resume(dev);
}