Hi, Len, will you please consider this patch as the fix for bug 8570, rather than the one at http://bugzilla.kernel.org/show_bug.cgi?id=8570#c21 ? 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@xxxxxxxxx> Signed-off-by: Zhao Yakui <yakui.zhao@xxxxxxxxx> --- drivers/acpi/processor_core.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) Index: linux-2.6/drivers/acpi/processor_core.c =================================================================== --- linux-2.6.orig/drivers/acpi/processor_core.c +++ linux-2.6/drivers/acpi/processor_core.c @@ -812,11 +812,20 @@ static int is_processor_present(acpi_han status = acpi_evaluate_integer(handle, "_STA", NULL, &sta); - if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_PRESENT)) { - ACPI_EXCEPTION((AE_INFO, status, "Processor Device is not present")); - return 0; - } - return 1; + + if (ACPI_SUCCESS(status) && (sta & ACPI_STA_DEVICE_PRESENT)) + return 1; + + /* + * _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; } static - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
