From patchwork Thu Apr 6 00:21:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Maciej W. Rozycki" X-Patchwork-Id: 13202717 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 70EF1C7619A for ; Thu, 6 Apr 2023 00:22:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234723AbjDFAWQ (ORCPT ); Wed, 5 Apr 2023 20:22:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234614AbjDFAVv (ORCPT ); Wed, 5 Apr 2023 20:21:51 -0400 Received: from angie.orcam.me.uk (angie.orcam.me.uk [78.133.224.34]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 2E5227D85; Wed, 5 Apr 2023 17:21:28 -0700 (PDT) Received: by angie.orcam.me.uk (Postfix, from userid 500) id 7BD5792009C; Thu, 6 Apr 2023 02:21:27 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by angie.orcam.me.uk (Postfix) with ESMTP id 74D9492009B; Thu, 6 Apr 2023 01:21:27 +0100 (BST) Date: Thu, 6 Apr 2023 01:21:27 +0100 (BST) From: "Maciej W. Rozycki" To: Bjorn Helgaas , Mahesh J Salgaonkar , Oliver O'Halloran , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Saeed Mahameed , Leon Romanovsky , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni cc: Alex Williamson , Lukas Wunner , Mika Westerberg , Stefan Roese , Jim Wilson , David Abdurachmanov , =?utf-8?q?Pali_Roh?= =?utf-8?q?=C3=A1r?= , linux-pci@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 6/7] net/mlx5: Rely on `link_active_reporting' In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Use `link_active_reporting' to determine whether Data Link Layer Link Active Reporting is available rather than re-retrieving the capability. Signed-off-by: Maciej W. Rozycki --- NB this has been compile-tested only with PPC64LE and x86-64 configurations. Changes from v7: - Reorder from 5/7. Changes from v6: - Regenerate against 6.3-rc5. New change in v6. --- drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) linux-pcie-link-active-reporting-mlx5.diff Index: linux-macro/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c =================================================================== --- linux-macro.orig/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c +++ linux-macro/drivers/net/ethernet/mellanox/mlx5/core/fw_reset.c @@ -307,7 +307,6 @@ static int mlx5_pci_link_toggle(struct m unsigned long timeout; struct pci_dev *sdev; int cap, err; - u32 reg32; /* Check that all functions under the pci bridge are PFs of * this device otherwise fail this function. @@ -346,11 +345,8 @@ static int mlx5_pci_link_toggle(struct m return err; /* Check link */ - err = pci_read_config_dword(bridge, cap + PCI_EXP_LNKCAP, ®32); - if (err) - return err; - if (!(reg32 & PCI_EXP_LNKCAP_DLLLARC)) { - mlx5_core_warn(dev, "No PCI link reporting capability (0x%08x)\n", reg32); + if (!bridge->link_active_reporting) { + mlx5_core_warn(dev, "No PCI link reporting capability\n"); msleep(1000); goto restore; }