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ACPI / scan: always register container scan handler

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Prevent platform devices from being created for ACPI containers
if CONFIG_ACPI_CONTAINER is unset by compiling out the container
scan handler's callbacks only in that case and still compiling
its device ID list in and registering the scan handler in either
case.

This change is based on a prototype from Zhang Rui.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki
2014-05-30 04:28:20 +02:00
parent d34afa9de4
commit a1ec657213
3 changed files with 16 additions and 5 deletions
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15
drivers/acpi/container.c
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@@ -41,6 +41,8 @@ static const struct acpi_device_id container_device_ids[] = {
{"", 0},
};
#ifdef CONFIG_ACPI_CONTAINER
static int acpi_container_offline(struct container_dev *cdev)
{
struct acpi_device *adev = ACPI_COMPANION(&cdev->dev);
@@ -107,7 +109,20 @@ static struct acpi_scan_handler container_handler = {
},
};
void __init acpi_container_init(void)
{
acpi_scan_add_handler(&container_handler);
}
#else
static struct acpi_scan_handler container_handler = {
.ids = container_device_ids,
};
void __init acpi_container_init(void)
{
acpi_scan_add_handler_with_hotplug(&container_handler, "container");
}
#endif /* CONFIG_ACPI_CONTAINER */