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7c2e17714e
Introduce a new function, acpi_get_data_full(), working in analogy with acpi_get_data() except that it can execute a callback provided as its 4th argument right after acpi_ns_get_attached_data() has returned a success. That will allow Linux to reference count the object pointed to by *data before the namespace mutex is released so as to ensure that it will not be freed going forward until the reference to it acquired by acpi_get_data_full() is dropped. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>