From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Chiang Subject: [PATCH 2/2] ACPI: processor: only evaluate _PDC once per processor Date: Wed, 20 Jan 2010 00:06:35 -0700 Message-ID: <20100120070635.19777.51848.stgit@bob.kio> References: <20100120070403.19777.31978.stgit@bob.kio> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from g5t0007.atlanta.hp.com ([15.192.0.44]:38600 "EHLO g5t0007.atlanta.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751324Ab0ATHGg (ORCPT ); Wed, 20 Jan 2010 02:06:36 -0500 In-Reply-To: <20100120070403.19777.31978.stgit@bob.kio> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: lenb@kernel.org Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, Venkatesh Pallipadi 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 --- drivers/acpi/processor_pdc.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/processor_pdc.c b/drivers/acpi/processor_pdc.c index 2944e7d..54f0214 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 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; }