Received: by 2002:a05:6a10:9afc:0:0:0:0 with SMTP id t28csp50853pxm; Wed, 2 Mar 2022 10:13:10 -0800 (PST) X-Google-Smtp-Source: ABdhPJzSEJchlbeYnSthkTugu7rM4b/UWAPwv7D5YHevqshedt8xj72ssvslhEUupyYrl8dTXY2M X-Received: by 2002:a17:906:d10c:b0:6cd:4aa2:cd62 with SMTP id b12-20020a170906d10c00b006cd4aa2cd62mr24820271ejz.229.1646244789931; Wed, 02 Mar 2022 10:13:09 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1646244789; cv=none; d=google.com; s=arc-20160816; b=Gxv9nO7TdlmJyVrMiaUicLxzW3Yay8GJ0pazkMwY3i6V9q00zVtMpoA0ipxNdLLbpB /jodqr5dGOm0tDUnDXekCMr09TG6RYJETSnCWHxUBB8phz+x01n61ua7QgyWtTK+6XI0 EoGmRNGWpNefXhe2s09W9Cevls9Fqlunr4r0yoDJG0v6iPigHqRdqX+HvBdfyZbTLWkt 2oSrXl2CNeRnvtteD9Dj0uaFv/KZSECDBHydHFnGRwOICH9MCmwOZT4hdpx+OZajrM5f 36pxakEG5SzADHZ/3lBxMdvEu7JaUD5OyTPT/qPuDchTSYbXsf84b2bIxIUrq1QbMji5 F6cQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:mime-version:user-agent:references:message-id :in-reply-to:subject:cc:to:from:date; bh=n3GDRSj2+BWqV4QEeWoIpIwAgy+FLa8QytnLJDGqZuk=; b=yyD2gA+d2BnlWrlS6lUiwRn5+zgsqOj/Kobx6gVR+GvhiJ+Qr0mxEG/NxiuBKTl6o/ XhOU/uMAoI2nB9dgRYb+ZrIH3cDh6a7ZfWNyw80bUQoE+cOTh/e0cy9AYaPOx7FgGnjH GVUYaujbJbKO68KmbivnL8C7b/QyKHJfE0tgHRKFQ/HJ0KxZab05Q1qUcOFOC23wNttt 53uN74T8Al0qGab66ngYS49TlhT4uyyuFAOXCj9Pw1OCuhl0IJKA07I8LnIKYG2XVziv 3rq6XQkku3gPAQ0Rz/1nmg8+rUR9iCp2DlTaICoiq0ZRBEWV2d09G9Azc4x40A0i0MU5 orzg== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id qa6-20020a170907868600b006d1aa558fa8si14481817ejc.872.2022.03.02.10.12.45; Wed, 02 Mar 2022 10:13:09 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238250AbiCAUoO (ORCPT + 99 others); Tue, 1 Mar 2022 15:44:14 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40268 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238284AbiCAUoI (ORCPT ); Tue, 1 Mar 2022 15:44:08 -0500 Received: from angie.orcam.me.uk (angie.orcam.me.uk [IPv6:2001:4190:8020::34]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7C3EE51E7E; Tue, 1 Mar 2022 12:43:24 -0800 (PST) Received: by angie.orcam.me.uk (Postfix, from userid 500) id 8D72892009C; Tue, 1 Mar 2022 21:43:22 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by angie.orcam.me.uk (Postfix) with ESMTP id 8A25292009B; Tue, 1 Mar 2022 20:43:22 +0000 (GMT) Date: Tue, 1 Mar 2022 20:43:22 +0000 (GMT) From: "Maciej W. Rozycki" To: Bjorn Helgaas cc: Stefan Roese , Jim Wilson , David Abdurachmanov , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PING^2][PATCH v3] pci: Work around ASMedia ASM2824 PCIe link training failures In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 1 Feb 2022, Maciej W. Rozycki wrote: > Attempt to handle cases with a downstream port of the ASMedia ASM2824 > PCIe switch where link training never completes and the link continues > switching between speeds indefinitely with the data link layer never > reaching the active state. Ping for: Maciej