From patchwork Mon Jul 6 23:32:40 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajat Jain X-Patchwork-Id: 1324005 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=J9lTuX6B; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B121C0Tkjz9sRK for ; Tue, 7 Jul 2020 09:32:47 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727116AbgGFXcq (ORCPT ); Mon, 6 Jul 2020 19:32:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55324 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726889AbgGFXcp (ORCPT ); Mon, 6 Jul 2020 19:32:45 -0400 Received: from mail-pf1-x44a.google.com (mail-pf1-x44a.google.com [IPv6:2607:f8b0:4864:20::44a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 91BA6C061794 for ; Mon, 6 Jul 2020 16:32:45 -0700 (PDT) Received: by mail-pf1-x44a.google.com with SMTP id s28so24415285pfd.19 for ; Mon, 06 Jul 2020 16:32:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:message-id:mime-version:subject:from:to:cc; bh=4fIH4GN6n6dAxulY3f2rwIOekdlU8y7grvtSAmvPzI8=; b=J9lTuX6BUejRFhEHNFaUM+EGnZQ/75bZdLy4iNsT5Hfg9e9Vp2ZjxgzbX6pUw+Lcpn tg1r43Kv4uTk2BFurA1fcOtde1w2S5Je2ywaJQQJWmwP1e8BwNtQBgUHZQNR3MaXk813 KuuesbqVFVvSo/GTlZp2ModcBzp2zvzYYFI+7B3gCdZbgJX8NyUO1ctAA8jzvSYvoZ2S XjPbtdKmePRNKr5bdqJi4L7kLsiJO1NYgKJn8l9OGXLA+HENv1Ai/LM+1uZFkp7+mArP Lt24vuKQtog0Wr1766hzamg6DKROwdRAxNd37B1qvIDbC2ELunnN1EbkQ2Lt4eBKXH6n Gyyg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:message-id:mime-version:subject:from:to:cc; bh=4fIH4GN6n6dAxulY3f2rwIOekdlU8y7grvtSAmvPzI8=; b=gIp8sR6QeQ0nBSOpYzGVKi4aAqZtLr9Wyx3UPSxExO9+er6s2rjroI0y6sQIahfJZq CpA2dKWoCw4/a+qT9+CkFi5sh4YTzWCtVyMs921B4jS/hOsxfrE1zRveydG91FjcBkfB /nCPyjcV6EQkYj5CxZyjHfxKJGsi275KiDp9EEiTgc+/f1BI1zFLQRUb6O3lLfma8jJe T8gspz7SonAr/oTyYQoOIWF8HuYYHpQ9afJ/sDC7IpANAIfJjSJcokkOpWsyg9kYQ9Ny t62jlYflcvFSib8OhW0Tp3wbqKXknS+m5ISxxm1LhiWkRDTWsRqkT7buNmMt1Ea2l4iW /bOA== X-Gm-Message-State: AOAM532D5tS7FDZnQirIvJa5qCMP+IrSAGJS4qCwf6qixgzir80dSh1S eJbE2cXcefT0GmsmcwYrcQybEmBNY/0E X-Google-Smtp-Source: ABdhPJyzU+Syk8Z8h9GVkTKPHXiJJGlAsi/qdcYnGS/wnQmGjay+JpyjugMliaODOoNeHqqjGG/4eRSGb/8V X-Received: by 2002:a17:902:8c8a:: with SMTP id t10mr40175484plo.153.1594078364821; Mon, 06 Jul 2020 16:32:44 -0700 (PDT) Date: Mon, 6 Jul 2020 16:32:40 -0700 Message-Id: <20200706233240.3245512-1-rajatja@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH RESEND v2] PCI: Add device even if driver attach failed From: Rajat Jain To: David Woodhouse , Lu Baolu , Joerg Roedel , Bjorn Helgaas , "Rafael J. Wysocki" , Len Brown , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-acpi@vger.kernel.org, Raj Ashok , lalithambika.krishnakumar@intel.com, Mika Westerberg , Jean-Philippe Brucker , Prashant Malani , Benson Leung , Todd Broch , Alex Levin , Mattias Nissler , Rajat Jain , Bernie Keany , Aaron Durbin , Diego Rivas , Duncan Laurie , Furquan Shaikh , Jesse Barnes , Christian Kellner , Alex Williamson , Greg Kroah-Hartman , oohall@gmail.com, Saravana Kannan , Suzuki K Poulose , Arnd Bergmann , Heikki Krogerus , stable@vger.kernel.org Cc: Rajat Jain Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org device_attach() returning failure indicates a driver error while trying to probe the device. In such a scenario, the PCI device should still be added in the system and be visible to the user. This patch partially reverts: commit ab1a187bba5c ("PCI: Check device_attach() return value always") Signed-off-by: Rajat Jain Reviewed-by: Greg Kroah-Hartman --- Resending to stable, independent from other patches per Greg's suggestion v2: Add Greg's reviewed by, fix commit log drivers/pci/bus.c | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/drivers/pci/bus.c b/drivers/pci/bus.c index 8e40b3e6da77d..3cef835b375fd 100644 --- a/drivers/pci/bus.c +++ b/drivers/pci/bus.c @@ -322,12 +322,8 @@ void pci_bus_add_device(struct pci_dev *dev) dev->match_driver = true; retval = device_attach(&dev->dev); - if (retval < 0 && retval != -EPROBE_DEFER) { + if (retval < 0 && retval != -EPROBE_DEFER) pci_warn(dev, "device attach failed (%d)\n", retval); - pci_proc_detach_device(dev); - pci_remove_sysfs_dev_files(dev); - return; - } pci_dev_assign_added(dev, true); }