Array indirect_io_hosts[] is declared in acpi_is_indirect_io_slave() as a const array, which means that the array will be re-built for each call.
Optimise by adding the static attribute, which means that the array is added to const-data pool and not re-built per function call. Reported-by: Hans de Goede <[email protected]> Signed-off-by: John Garry <[email protected]> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 970dd87..199c8ea6 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -1528,7 +1528,7 @@ static int acpi_check_serial_bus_slave(struct acpi_resource *ares, void *data) static bool acpi_is_indirect_io_slave(struct acpi_device *device) { struct acpi_device *parent = device->parent; - const struct acpi_device_id indirect_io_hosts[] = { + static const struct acpi_device_id indirect_io_hosts[] = { {"HISI0191", 0}, {} }; -- 1.9.1
