From patchwork Fri Jun 26 00:27:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajat Jain X-Patchwork-Id: 1317291 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=gsWwDuEW; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49tHlT6Yd9z9sQt for ; Fri, 26 Jun 2020 10:27:33 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725876AbgFZA1R (ORCPT ); Thu, 25 Jun 2020 20:27:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54772 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725816AbgFZA1Q (ORCPT ); Thu, 25 Jun 2020 20:27:16 -0400 Received: from mail-yb1-xb49.google.com (mail-yb1-xb49.google.com [IPv6:2607:f8b0:4864:20::b49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DDFBC08C5DB for ; Thu, 25 Jun 2020 17:27:16 -0700 (PDT) Received: by mail-yb1-xb49.google.com with SMTP id p22so7826350ybg.21 for ; Thu, 25 Jun 2020 17:27:16 -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=iv7sfYwPBb+T3sh9Tm/gYiOZsGJSNCHeo7sHuB/mAjU=; b=gsWwDuEWxxXpafc13YiTJ2OicmolQf5h7KB/1owTbiu6Ee1j93pn2eUyAh2einvluw E8nZ02G/7r07CFhIK5dPv0ZlK2iUzky20NJwNJzL3BmkInHkfTJUi0whj4v7SeoBFp3g L/3uvCEgLYksFm2o4W1T7X4v2l1c/6dVt1wvCZUbCr3HPRrMHD/Wx73XJpbZlJYqrhpV KaBzdZ96OBEfsKzgIwFT42MUz/2ka3sVvK4ATXx/XlaVPmoIodvUZOQza8cC5ubLjNIz E74HpampI/OVzg9d/tQFsKbYUOV6dBx9FZXpN2zmmaEvoJ5q72zzytovyjewoIGXtbDl naBQ== 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=iv7sfYwPBb+T3sh9Tm/gYiOZsGJSNCHeo7sHuB/mAjU=; b=B6Qhckv5mf8z/qXAAmqjviG+OVOYu5e1TbbIjZHzXyv+Ok44S+SBm99J588PKNYpUo 9ld88IRFVS3IFe/r8XTgZTnUoYQdvM9DPVxn+f/l/TeUp7GoYamz8CLD537knFUIOhWv ANSIRwd92J/IVHw/fL+AX3TM7wL4jBLSnVxFHsC0kBaNwATaCDz9MqfVjHF+3wOcYHHc YOe6N//L2umeEqrSJvAKMl8fZw1ZTAarDAmsaKrg1O/USeOCnjwoKW5PyyErj7+JX3gg gaTiz0E78J2klyFsG1hVs88Myyylg5PamBADuX6FUL/kNm+ra8ixp97ma78lOreIgsuF 0ijw== X-Gm-Message-State: AOAM532dFCdxPSZ17QUdD9DjZqlytgyRvMa+zfXnBbUMp/i5wDo4awCr Qh5CwP8xMbUzGbNggMhuFQQYv7r7yVTR X-Google-Smtp-Source: ABdhPJyJZ32y84BWOCzPlXnj6DBPie+kwwNvt36mcjomQYjcSGXpCQX3nGJKpsx74v22jf/R8UEafr0WqCf3 X-Received: by 2002:a25:aaa9:: with SMTP id t38mr763977ybi.312.1593131235516; Thu, 25 Jun 2020 17:27:15 -0700 (PDT) Date: Thu, 25 Jun 2020 17:27:09 -0700 Message-Id: <20200626002710.110200-1-rajatja@google.com> Mime-Version: 1.0 X-Mailer: git-send-email 2.27.0.212.ge8ba1cc988-goog Subject: [PATCH 1/2] pci: Add pci device even if the driver failed to attach 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 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 --- 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); }