From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alex Hung Subject: [PATCH] ACPI/PCI: pci_link: remove error messages when no _PRS methods Date: Tue, 30 Jan 2018 21:52:19 -0800 Message-ID: <1517377939-9817-1-git-send-email-alex.hung@canonical.com> Return-path: Received: from youngberry.canonical.com ([91.189.89.112]:36619 "EHLO youngberry.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751001AbeAaFwX (ORCPT ); Wed, 31 Jan 2018 00:52:23 -0500 Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: rjw@rjwysocki.net, lenb@kernel.org, linux-acpi@vger.kernel.org, alex.hung@canonical.com In recent Intel hardware the IRQs become non-configurable after BIOS initializes them in PEI phase and _PRS objects are no longer included in ASL. This is the same as "static (non-configurable) devices do not specify a _PRS object" in ACPI spec. As a result, error messages saying "ACPI Exception: AE_NOT_FOUND, Evaluating _PRS" are not needed. Signed-off-by: Alex Hung --- drivers/acpi/pci_link.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 85ad679390e3..f98215971f30 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -172,10 +172,8 @@ static int acpi_pci_link_get_possible(struct acpi_pci_link *link) status = acpi_walk_resources(link->device->handle, METHOD_NAME__PRS, acpi_pci_link_check_possible, link); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _PRS")); + if (ACPI_FAILURE(status)) return -ENODEV; - } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Found %d possible IRQs\n", -- 2.15.1