From a4932299d03a1c20e58e4cc40a66fb0a048fb3a7 Mon Sep 17 00:00:00 2001 From: Alex Chiang Date: Wed, 20 Jan 2010 00:06:35 -0700 Subject: ACPI: processor: only evaluate _PDC once per processor If we evaluate _PDC in the early path, we do not want to evaluate it again when the processor driver is loaded. Cc: Venkatesh Pallipadi Signed-off-by: Alex Chiang Signed-off-by: Len Brown --- drivers/acpi/processor_pdc.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/acpi/processor_pdc.c') diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index 3bbafe9576ae..e306ba9aa34e 100644 --- a/drivers/acpi/processor_pdc.c +++ b/drivers/acpi/processor_pdc.c @@ -125,6 +125,8 @@ acpi_processor_eval_pdc(acpi_handle handle, struct acpi_object_list *pdc_in) return status; } +static int early_pdc_done; + void acpi_processor_set_pdc(acpi_handle handle) { struct acpi_object_list *obj_list; @@ -132,6 +134,9 @@ void acpi_processor_set_pdc(acpi_handle handle) if (arch_has_acpi_pdc() == false) return; + if (early_pdc_done) + return; + obj_list = acpi_processor_alloc_pdc(); if (!obj_list) return; @@ -199,4 +204,6 @@ void __init acpi_early_processor_set_pdc(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, early_init_pdc, NULL, NULL, NULL); + + early_pdc_done = 1; } -- cgit v1.2.3