Commit d0ce46f5 authored Feb 23, 2008 by Zhang Rui Committed by Len Brown Feb 23, 2008

ACPI Exception (): AE_NOT_FOUND, Processor Device is not present (update)

update cfaf3747
ACPI: ACPI Exception (): AE_NOT_FOUND, Processor Device is not present

is_processor_present is only called in the processor hotplug case,
and _STA method is mandatory at this time.

We should ignore those processors that are disabled in the MADT
and don't have _STA methods.
Because they will never exist in this system.
For the processors that don't physically exist but can be
hot plugged later, we still need this debug info.

http://bugzilla.kernel.org/show_bug.cgi?id=8570



Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

parent 39273b58

drivers/acpi/processor_core.c

+9 −7

Original line number	Diff line number	Diff line
		@@ -840,17 +840,19 @@ static int is_processor_present(acpi_handle handle)


		status = acpi_evaluate_integer(handle, "_STA", NULL, &sta);
		/*
		* if a processor object does not have an _STA object,
		* OSPM assumes that the processor is present.
		*/
		if (status == AE_NOT_FOUND)
		return 1;

		if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT))
		return 1;

		ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present"));
		/*
		* _STA is mandatory for a processor that supports hot plug
		*/
		if (status == AE_NOT_FOUND)
		ACPI_DEBUG_PRINT((ACPI_DB_INFO,
		"Processor does not support hot plug\n"));
		else
		ACPI_EXCEPTION((AE_INFO, status,
		"Processor Device is not present"));
		return 0;
		}