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PM / core: Re-factor some code dealing with parents in __device_suspend() 

Let's make the code a bit more readable by moving some of the code, which
deals with adjustments for parent devices in __device_suspend(), into its
own function.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2017-11-13 16:46:41 +01:00 committed by Rafael J. Wysocki
parent 47acbd77e6
commit 1172ee3125
1 changed files with 17 additions and 12 deletions
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29
drivers/base/power/main.c
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@ -1479,6 +1479,22 @@ static int legacy_suspend(struct device *dev, pm_message_t state,
return error;
}
static void dpm_propagate_to_parent(struct device *dev)
{
struct device *parent = dev->parent;
if (!parent)
return;
spin_lock_irq(&parent->power.lock);
parent->power.direct_complete = false;
if (dev->power.wakeup_path && !parent->power.ignore_children)
parent->power.wakeup_path = true;
spin_unlock_irq(&parent->power.lock);
}
static void dpm_clear_suppliers_direct_complete(struct device *dev)
{
struct device_link *link;
@ -1590,19 +1606,8 @@ static int __device_suspend(struct device *dev, pm_message_t state, bool async)
End:
if (!error) {
struct device *parent = dev->parent;
dev->power.is_suspended = true;
if (parent) {
spin_lock_irq(&parent->power.lock);
dev->parent->power.direct_complete = false;
if (dev->power.wakeup_path
&& !dev->parent->power.ignore_children)
dev->parent->power.wakeup_path = true;
spin_unlock_irq(&parent->power.lock);
}
dpm_propagate_to_parent(dev);
dpm_clear_suppliers_direct_complete(dev);
}