From patchwork Sat Aug 17 00:10:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 11098423 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1DB6D13B1 for ; Sat, 17 Aug 2019 00:13:43 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0D33D28A96 for ; Sat, 17 Aug 2019 00:13:43 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 019DF28A9D; Sat, 17 Aug 2019 00:13:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A5C3F28A96 for ; Sat, 17 Aug 2019 00:13:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726252AbfHQAN1 (ORCPT ); Fri, 16 Aug 2019 20:13:27 -0400 Received: from mga14.intel.com ([192.55.52.115]:6694 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726032AbfHQANZ (ORCPT ); Fri, 16 Aug 2019 20:13:25 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 16 Aug 2019 17:13:23 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,395,1559545200"; d="scan'208";a="168195018" Received: from skuppusw-desk.jf.intel.com ([10.54.74.33]) by orsmga007.jf.intel.com with ESMTP; 16 Aug 2019 17:13:22 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, keith.busch@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v6 8/8] PCI: Skip Enhanced Allocation (EA) initialization for VF device Date: Fri, 16 Aug 2019 17:10:22 -0700 Message-Id: <336c3f97a226f936ee3581b33d40ba00a8a7caa0.1565997310.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: References: MIME-Version: 1.0 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Kuppuswamy Sathyanarayanan As per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced Allocation Capability. So skip pci_ea_init() for virtual devices. Cc: Ashok Raj Cc: Keith Busch Suggested-by: Ashok Raj Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/pci/pci.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 1b27b5af3d55..266600a11769 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -3025,6 +3025,13 @@ void pci_ea_init(struct pci_dev *dev) int offset; int i; + /* + * Per PCIe r4.0, sec 9.3.6, VF must not implement Enhanced + * Allocation Capability. + */ + if (dev->is_virtfn) + return; + /* find PCI EA capability in list */ ea = pci_find_capability(dev, PCI_CAP_ID_EA); if (!ea)