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由 Rafael J. Wysocki 提交于
If the caller of acpi_bus_set_power() already has a pointer to the struct acpi_device object corresponding to the device in question, it doesn't make sense for it to go through acpi_bus_get_device(), which may be costly, because it involves acquiring the global ACPI namespace mutex. For this reason, export the function operating on struct acpi_device objects used internally by acpi_bus_set_power(), so that it may be called instead of acpi_bus_set_power() in the above case, and change its name to acpi_device_set_power(). Additionally, introduce two inline wrappers for checking ACPI PM capabilities of devices represented by struct acpi_device objects. Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
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