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PCI / ACPI: Use acpi_find_child_device() for child devices lookup
It is much more efficient to use acpi_find_child_device() for child devices lookup in acpi_pci_find_device() and pass ACPI_COMPANION(dev->parent) to it directly instead of obtaining ACPI_HANDLE() of ACPI_COMPANION(dev->parent) and passing it to acpi_find_child() which has to run acpi_bus_get_device() to obtain ACPI_COMPANION(dev->parent) from that again. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Aaron Lu <aaron.lu@intel.com>
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Rafael J. Wysocki
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Dec 7, 2013
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