ACPI / dock: Associate dock platform devices with ACPI device objects (af887449) · Commits · 戴 / test

To allow user space to check which ACPI device object the dock station is represented by, make acpi_dock_add() indicate to platform_device_register_full() which ACPI device object should be the companion of the new platform device. This also ensures that the ACPI device object in question will not go away while the dock platform device is present (which is always). Signed-off-by:

Rafael J. Wysocki <rafael.j.wysocki@intel.com>

drivers/acpi/dock.c

+8 −2

Original line number	Diff line number	Diff line
		@@ -768,12 +768,18 @@ static struct attribute_group dock_attribute_group = {
		void acpi_dock_add(struct acpi_device *adev)
		{
		struct dock_station *dock_station, ds = { NULL, };
		struct platform_device_info pdevinfo;
		acpi_handle handle = adev->handle;
		struct platform_device *dd;
		int ret;

		dd = platform_device_register_data(NULL, "dock", dock_station_count,
		&ds, sizeof(ds));
		memset(&pdevinfo, 0, sizeof(pdevinfo));
		pdevinfo.name = "dock";
		pdevinfo.id = dock_station_count;
		pdevinfo.acpi_node.companion = adev;
		pdevinfo.data = &ds;
		pdevinfo.size_data = sizeof(ds);
		dd = platform_device_register_full(&pdevinfo);
		if (IS_ERR(dd))
		return;

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