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PM: runtime: Allow to call __pm_runtime_set_status() from atomic context

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The only two users of __pm_runtime_set_status() are pm_runtime_set_active()
and pm_runtime_set_suspended(). These are widely used and should be called
from non-atomic context to work as expected. However, it would be
convenient to allow them be called from atomic context too, as shown from a
subsequent change, so let's add support for this.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Tested-by: Maulik Shah <quic_mkshah@quicinc.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2022-04-01 16:11:23 +02:00 committed by Rafael J. Wysocki
parent e5a3b0c5b6
commit 13966517d4
1 changed files with 5 additions and 4 deletions
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9
drivers/base/power/runtime.c
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@ -1210,12 +1210,13 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
{
struct device *parent = dev->parent;
bool notify_parent = false;
unsigned long flags;
int error = 0;
if (status != RPM_ACTIVE && status != RPM_SUSPENDED)
return -EINVAL;
spin_lock_irq(&dev->power.lock);
spin_lock_irqsave(&dev->power.lock, flags);
/*
* Prevent PM-runtime from being enabled for the device or return an
@ -1226,7 +1227,7 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
else
error = -EAGAIN;
spin_unlock_irq(&dev->power.lock);
spin_unlock_irqrestore(&dev->power.lock, flags);
if (error)
return error;
@ -1247,7 +1248,7 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
device_links_read_unlock(idx);
}
spin_lock_irq(&dev->power.lock);
spin_lock_irqsave(&dev->power.lock, flags);
if (dev->power.runtime_status == status || !parent)
goto out_set;
@ -1288,7 +1289,7 @@ int __pm_runtime_set_status(struct device *dev, unsigned int status)
dev->power.runtime_error = 0;
out:
spin_unlock_irq(&dev->power.lock);
spin_unlock_irqrestore(&dev->power.lock, flags);
if (notify_parent)
pm_request_idle(parent);