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ARM: 8199/1: PM / Runtime: Add getter for querying the IRQ safe option v12

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Add a simple getter pm_runtime_is_irq_safe() for querying whether runtime
PM IRQ safe was set or not.

Various bus drivers implementing runtime PM may use choose to suspend
differently based on IRQ safeness status of child driver (e.g. do not
unprepare the clock if IRQ safe is not set).

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Ulf Hansson <[email protected]>
Acked-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Russell King <[email protected]>
This commit is contained in:
Krzysztof Kozlowski 2014-11-14 09:47:25 +01:00 • committed by Russell King
commit 3fb1581ea1
2 changed files with 10 additions and 0 deletions
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4
Documentation/power/runtime_pm.txt
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@ -468,6 +468,10 @@ drivers/base/power/runtime.c and include/linux/pm_runtime.h:
- set the power.irq_safe flag for the device, causing the runtime-PM
callbacks to be invoked with interrupts off
bool pm_runtime_is_irq_safe(struct device *dev);
- return true if power.irq_safe flag was set for the device, causing
the runtime-PM callbacks to be invoked with interrupts off
void pm_runtime_mark_last_busy(struct device *dev);
- set the power.last_busy field to the current time