This is a note to let you know that I've just added the patch titled
ACPI / hotplug: Generate online uevents for ACPI containers
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
acpi-hotplug-generate-online-uevents-for-acpi-containers.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8ab17fc92e49bc2b8fff9d220c19bf50ec9c1158 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
Date: Sun, 21 Sep 2014 02:58:18 +0200
Subject: ACPI / hotplug: Generate online uevents for ACPI containers
From: "Rafael J. Wysocki" <rafael.j.wysocki@xxxxxxxxx>
commit 8ab17fc92e49bc2b8fff9d220c19bf50ec9c1158 upstream.
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@xxxxxxxxxxxxxx>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/container.c | 8 ++++++++
drivers/acpi/scan.c | 3 +++
include/acpi/acpi_bus.h | 1 +
3 files changed, 12 insertions(+)
--- a/drivers/acpi/container.c
+++ b/drivers/acpi/container.c
@@ -96,6 +96,13 @@ static void container_device_detach(stru
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,
@@ -103,6 +110,7 @@ static struct acpi_scan_handler containe
.hotplug = {
.enabled = true,
.demand_offline = true,
+ .notify_online = container_device_online,
},
};
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -2068,6 +2068,9 @@ static void acpi_bus_attach(struct acpi_
ok:
list_for_each_entry(child, &device->children, node)
acpi_bus_attach(child);
+
+ if (device->handler && device->handler->hotplug.notify_online)
+ device->handler->hotplug.notify_online(device);
}
/**
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -118,6 +118,7 @@ struct acpi_device;
struct acpi_hotplug_profile {
struct kobject kobj;
int (*scan_dependent)(struct acpi_device *adev);
+ void (*notify_online)(struct acpi_device *adev);
bool enabled:1;
bool demand_offline:1;
};
Patches currently in stable-queue which might be from rafael.j.wysocki@xxxxxxxxx are
queue-3.14/acpi-scan-correct-error-return-value-of-create_modalias.patch
queue-3.14/acpi-hotplug-generate-online-uevents-for-acpi-containers.patch
queue-3.14/acpi-rtc-fix-cmos-rtc-opregion-handler-accesses-to-wrong-addresses.patch
queue-3.14/acpica-update-to-gpio-region-handler-interface.patch
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