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Commit ccf78040 authored by Lv Zheng's avatar Lv Zheng Committed by Rafael J. Wysocki
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ACPI: Add _UID support for ACPI devices. 



The _UID object is optional, but is required when the device has no
other way to report a persistent unique device ID.
This patch is required for ACPI 5.0 ACPI enumerated IP cores.

Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
Signed-off-by: default avatarRui Zhang <rui.zhang@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 9743fdea

drivers/acpi/scan.c

+4 −0
Original line number Diff line number Diff line
@@ -381,6 +381,7 @@ static void acpi_device_release(struct device *dev) 
	struct acpi_device *acpi_dev = to_acpi_device(dev);



	acpi_free_ids(acpi_dev);

	kfree(acpi_dev->pnp.unique_id);

	kfree(acpi_dev);

}
@@ -1211,6 +1212,9 @@ static void acpi_device_set_id(struct acpi_device *device) 
			device->pnp.bus_address = info->address;

			device->flags.bus_address = 1;

		}

		if (info->valid & ACPI_VALID_UID)

			device->pnp.unique_id = kstrdup(info->unique_id.string,

							GFP_KERNEL);



		kfree(info);