ACPI: Advertise to BIOS in _OSC: _OST on _PPC changes
If the BIOS pokes the system-wide OSC bits to see if Linux supports evaluating _OST after a _PPC change notification, answer yes. Also, fix an oversight where we neglected to set the OSC bit advertising processor aggregator device support when acpi-pad is compiled as a module. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
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@ -490,9 +490,14 @@ static void acpi_bus_osc_support(void)
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capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE;
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capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */
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#ifdef CONFIG_ACPI_PROCESSOR_AGGREGATOR
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#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\
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defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE)
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capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT;
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#endif
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#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE)
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capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT;
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#endif
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if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle)))
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return;
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if (ACPI_SUCCESS(acpi_run_osc(handle, &context)))
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