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ACPI / hotplug: Generate online uevents for ACPI containers

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Commit 46394fd01 (ACPI / hotplug: Move container-specific code out of
the core) removed the generation of "online" uevents for containers,
because "add" uevents are now generated for them automatically when
container system devices are registered.  However, there are user
space tools that need to be notified when the container and all of
its children have been enumerated, which doesn't happen any more.

For this reason, add a mechanism allowing "online" uevents to be
generated for ACPI containers after enumerating the container along
with all of its children.

Fixes: 46394fd01 (ACPI / hotplug: Move container-specific code out of the core)
Reported-and-tested-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: 3.14+ <stable@vger.kernel.org> # 3.14+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki
2014-09-21 02:58:18 +02:00
parent 9e82bf0141
commit 8ab17fc92e
3 changed files with 12 additions and 0 deletions
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8
drivers/acpi/container.c
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@@ -99,6 +99,13 @@ static void container_device_detach(struct acpi_device *adev)
device_unregister(dev);
}
static void container_device_online(struct acpi_device *adev)
{
struct device *dev = acpi_driver_data(adev);
kobject_uevent(&dev->kobj, KOBJ_ONLINE);
}
static struct acpi_scan_handler container_handler = {
.ids = container_device_ids,
.attach = container_device_attach,
@@ -106,6 +113,7 @@ static struct acpi_scan_handler container_handler = {
.hotplug = {
.enabled = true,
.demand_offline = true,
.notify_online = container_device_online,
},
};