ACPI: Rework acpi_get_child() to be more efficient

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Observe that acpi_get_child() doesn't need to use the helper
struct acpi_find_child structure and change it to work without it.
Also, using acpi_get_object_info() to get the output of _ADR for the
given device is overkill, because that function does much more than
just evaluating _ADR (let alone the additional memory allocation
done by it).

Moreover, acpi_get_child() doesn't need to loop any more once it has
found a matching handle, so make it stop in that case.  To prevent
the results from changing, make it use do_acpi_find_child() as
a post-order callback.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Rafael J. Wysocki 2013-01-10 13:13:49 +01:00

parent 949db153b6

commit 33f767d767

1 changed files with 13 additions and 22 deletions

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drivers/acpi/glue.c

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