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| author | Igor Mammedov <imammedo@redhat.com> | 2014-05-05 22:49:49 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-07 10:28:26 -0700 |
| commit | 8c9bc41c0e97c9e176710876ca9e068b1435f409 (patch) | |
| tree | 613ae05e277852eeab647b51f40a08bdddb7b994 /net/lapb/lapb_subr.c | |
| parent | 9c020b30dc3064cf0eb1be1164c38c67e3135239 (diff) | |
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/lapb/lapb_subr.c')
0 files changed, 0 insertions, 0 deletions