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authorLukas Wunner <lukas@wunner.de>2015-11-25 20:19:55 (GMT)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-12-09 00:31:41 (GMT)
commit2d12b6b381ba059d5f92798f5ea739672a2f5fcf (patch)
tree43b44ae5508885d7170fc074d394f9e4aad7ca0b /drivers/leds
parentca9dc8d42b30e2d766b471fe5ecf0c71fd309c8f (diff)
downloadlinux-2d12b6b381ba059d5f92798f5ea739672a2f5fcf.tar.xz
ACPI / utils: Add acpi_dev_present()
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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