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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2018-04-26 10:53:03 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-05-14 22:58:44 +0200 |
| commit | 4f688748c958deb947759773be6dffe6b44d084d (patch) | |
| tree | f403d602c8e114a33618ba35d36b1ceb22a0de01 /drivers/base/power/common.c | |
| parent | b56d9c9135629632faff44cff153784e76b82550 (diff) | |
| download | linux-4f688748c958deb947759773be6dffe6b44d084d.tar.bz2 | |
PM / Domains: Check for existing PM domain in dev_pm_domain_attach()
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>
Diffstat (limited to 'drivers/base/power/common.c')
| -rw-r--r-- | drivers/base/power/common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index f6a9ad52cbbf..f3cf61f58f25 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -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); |