From patchwork Fri Jun 29 10:27:38 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hari Vyas X-Patchwork-Id: 936767 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=broadcom.com header.i=@broadcom.com header.b="gfHuQkW0"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41HCX92Qc8z9ryk for ; Fri, 29 Jun 2018 20:27:53 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935354AbeF2K1u (ORCPT ); Fri, 29 Jun 2018 06:27:50 -0400 Received: from mail-qt0-f196.google.com ([209.85.216.196]:41117 "EHLO mail-qt0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932468AbeF2K1t (ORCPT ); Fri, 29 Jun 2018 06:27:49 -0400 Received: by mail-qt0-f196.google.com with SMTP id y20-v6so7325581qto.8 for ; Fri, 29 Jun 2018 03:27:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id; bh=6ZKG71Kwoo1kjlRlZsFKiYAOzr0U2xCIgdBHFuGryII=; b=gfHuQkW0442NpqouSCYmn8TGOZ+jucFym7cjXZIzU5typQaGMkuQGjEhQgPzSVTkJw wmxh9xn1NtnVBJdLILG8MW2o90NWhXe7Pz8aZCpEZJd4UmrGdCnwn7NNVIx0AgcyuOeH Qdu8a+bCpfMpHH1WcFAlsRPdbngA1tDs9DUvA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=6ZKG71Kwoo1kjlRlZsFKiYAOzr0U2xCIgdBHFuGryII=; b=LkIN4ijXSmSob+LYKD9vjAcHSBVraBYI7jL4nWNrvkMtK7wAR8rA4afMYDM8/x11HF Raa0XwtwcVVyzU2F0+W1l+m9ZMAjl4czWxErzjZ6FLB30ziWj9ldd3AxF9cMnAZItVz6 Fs+sL3LQj7lnNjEHmh6YIyILQH3A3wcl4tqtTLq4/W+QiTxHsxHfLn3N8Z6l2SUYf7zD 4G0W6nLIX36IGFGubD3oiSDZnq0eot/Taw3pa6ca2iK9W/4mD0WCHuJGw2KJWVuCFcW7 J1QMPkT9CD8eh0QMya5Qr394kB9WgA1iDYLcFpRF77oEy9BUgtrtVxQ2v0KZmEXa48Ms a11w== X-Gm-Message-State: APt69E314B4PxV3CEGRssRDWuxP+XCpfLUSasEv27oncNFRCgtciwj5E fNEHMTVhwoP7P/4m3D0iOzG+Jw== X-Google-Smtp-Source: AAOMgpfQ1jJktz83t4opRG9uoqr6SfbKiO+2PinPLeNqf1kJ/IpeMqHWToTcJpyvdmNNkE1l/+uqhA== X-Received: by 2002:ac8:36f0:: with SMTP id b45-v6mr12628499qtc.249.1530268068847; Fri, 29 Jun 2018 03:27:48 -0700 (PDT) Received: from hariv-server.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id v88-v6sm2188365qkv.63.2018.06.29.03.27.45 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 29 Jun 2018 03:27:47 -0700 (PDT) From: Hari Vyas To: bhelgaas@google.com, benh@kernel.crashing.org Cc: linux-pci@vger.kernel.org, ray.jui@broadcom.com, Hari Vyas Subject: [PATCH v2 0/3] PCI: Data corruption happening due to race condition Date: Fri, 29 Jun 2018 15:57:38 +0530 Message-Id: <1530268061-17324-1-git-send-email-hari.vyas@broadcom.com> X-Mailer: git-send-email 1.9.1 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Changes in v2: To avoid race condition while updating is_added and is_busmaster bits, is_added is moved to a private flag variable. is_added updation is handled in atomic manner also. Hari Vyas (3): PCI: Data corruption happening due to race condition PCI: use new pci function to get device addition state PCI: Hotplug: use new pci function to get device addition state arch/powerpc/kernel/pci-common.c | 4 +++- arch/powerpc/platforms/powernv/pci-ioda.c | 3 ++- arch/powerpc/platforms/pseries/setup.c | 3 ++- drivers/pci/bus.c | 6 +++--- drivers/pci/hotplug/acpiphp_glue.c | 2 +- drivers/pci/pci.c | 1 + drivers/pci/pci.h | 18 ++++++++++++++++++ drivers/pci/probe.c | 4 ++-- drivers/pci/remove.c | 5 +++-- include/linux/pci.h | 1 - 10 files changed, 35 insertions(+), 12 deletions(-)