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PM / Domains: Check for existing PM domain in dev_pm_domain_attach()

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Instead of checking if an existing PM domain pointer has been assigned in
genpd_dev_pm_attach() and acpi_dev_pm_attach(), move the check to the
common path in dev_pm_domain_attach(), thus potentially avoid one
unnecessary check.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Ulf Hansson 2018-04-26 10:53:03 +02:00 committed by Rafael J. Wysocki
parent b56d9c9135
commit 4f688748c9
3 changed files with 3 additions and 6 deletions
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3
drivers/acpi/device_pm.c
View file

@ -1259,9 +1259,6 @@ int acpi_dev_pm_attach(struct device *dev, bool power_on)
if (!adev)
return -ENODEV;
if (dev->pm_domain)
return -EEXIST;
/*
* Only attach the power domain to the first device if the
* companion is shared by multiple. This is to prevent doing power

3
drivers/base/power/common.c
View file

@ -104,6 +104,9 @@ int dev_pm_domain_attach(struct device *dev, bool power_on)
{
int ret;
if (dev->pm_domain)
return -EEXIST;
ret = acpi_dev_pm_attach(dev, power_on);
if (ret)
ret = genpd_dev_pm_attach(dev);

3
drivers/base/power/domain.c
View file

@ -2194,9 +2194,6 @@ int genpd_dev_pm_attach(struct device *dev)
if (!dev->of_node)
return -ENODEV;
if (dev->pm_domain)
return -EEXIST;
ret = of_parse_phandle_with_args(dev->of_node, "power-domains",
"#power-domain-cells", 0, &pd_args);
if (ret < 0)