| Message ID | 1401442117-9262-1-git-send-email-luis.henriques@canonical.com |
|---|---|
| State | New |
| Headers | show |
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c index 5a74a9c1e42c..0611a1cda874 100644 --- a/drivers/acpi/acpi_processor.c +++ b/drivers/acpi/acpi_processor.c @@ -403,7 +403,6 @@ static int acpi_processor_add(struct acpi_device *device, goto err; pr->dev = dev; - dev->offline = pr->flags.need_hotplug_init; /* Trigger the processor driver's .probe() if present. */ if (device_attach(dev) >= 0)
This is a note to let you know that I have just added a patch titled ACPI / processor: do not mark present at boot but not onlined CPU as onlined to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.11.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Luis ------ From 016cdb705d64d55a707744607f86410db0931f8c Mon Sep 17 00:00:00 2001 From: Igor Mammedov <imammedo@redhat.com> Date: Mon, 5 May 2014 22:49:49 +0200 Subject: ACPI / processor: do not mark present at boot but not onlined CPU as onlined commit 0b9d46dd7debf8e6dc8614106f1c1909fa8de64d upstream. acpi_processor_add() assumes that present at boot CPUs are always onlined, it is not so if a CPU failed to become onlined. As result acpi_processor_add() will mark such CPU device as onlined in sysfs and following attempts to online/offline it using /sys/device/system/cpu/cpuX/online attribute will fail. Do not poke into device internals in acpi_processor_add() and touch "struct device { .offline }" attribute, since for CPUs onlined at boot it's set by: topology_init() -> arch_register_cpu() -> register_cpu() before ACPI device tree is parsed, and for hotplugged CPUs it's set when userspace onlines CPU via sysfs. Signed-off-by: Igor Mammedov <imammedo@redhat.com> Acked-by: Toshi Kani <toshi.kani@hp.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/acpi/acpi_processor.c | 1 - 1 file changed, 1 deletion(-) -- 1.9.1