Messages in this thread Patch in this message | | | Date | Fri, 22 Oct 2010 11:51:58 -0700 | From | Greg KH <> | Subject | [084/103] ACPI: Handle ACPI0007 Device in acpi_early_set_pdc |
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2.6.35-stable review patch. If anyone has any objections, please let us know.
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From: Yinghai Lu <yinghai@kernel.org>
commit c1e0ddbf0a97e1704d7f13b4934f9acca002402d upstream.
After | commit d8191fa4a33fdc817277da4f2b7f771ff605a41c | Author: Alex Chiang <achiang@hp.com> | Date: Mon Feb 22 12:11:39 2010 -0700 | | ACPI: processor: driver doesn't need to evaluate _PDC | | Now that the early _PDC evaluation path knows how to correctly | evaluate _PDC on only physically present processors, there's no | need for the processor driver to evaluate it later when it loads. | | To cover the hotplug case, push _PDC evaluation down into the | hotplug paths.
only cpu with Processor Statement get processed with _PDC
If bios is using Device object instead of Processor statement. SSDTs for Pstate/Cstate/Tstate can not be loaded dynamically.
Need to try to scan ACPI0007 in addition to Processor.
That commit is between 2.6.34-rc1 and 2.6.34-rc2, so stable tree for 2.6.34+ need this patch.
Signed-off-by: Yinghai Lu <yinghai@kernel.org> Reviewed-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- drivers/acpi/processor_core.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -352,4 +352,5 @@ void __init acpi_early_processor_set_pdc acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); + acpi_get_devices("ACPI0007", early_init_pdc, NULL, NULL); }
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