ACPI / utils: Add acpi_dev_present()

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There's an idiom in use by 7 Linux drivers to detect the presence of a
particular ACPI HID by walking the namespace with acpi_get_devices().
The callback passed to acpi_get_devices() is mostly identical across
the drivers, leading to lots of duplicate code.

Add acpi_dev_present(), the ACPI equivalent to pci_dev_present(),
allowing us to deduplicate all that boilerplate in the drivers.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

...

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Lukas Wunner 2015-11-25 21:19:55 +01:00 • committed by Rafael J. Wysocki

parent ca9dc8d42b

commit 2d12b6b381

4 changed files with 42 additions and 7 deletions

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8

drivers/acpi/internal.h

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8

drivers/acpi/scan.c

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31

drivers/acpi/utils.c

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2

include/acpi/acpi_bus.h

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