From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750920AbeBPWuI (ORCPT ); Fri, 16 Feb 2018 17:50:08 -0500 Received: from mail.kernel.org ([198.145.29.99]:56034 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750800AbeBPWuH (ORCPT ); Fri, 16 Feb 2018 17:50:07 -0500 DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 122BB217A0 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=helgaas@kernel.org Subject: [PATCH v1 0/2] PCI: Probe for reset support earlier From: Bjorn Helgaas To: linux-pci@vger.kernel.org Cc: Jayachandran Nair , Lorenzo Pieralisi , "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, Alex Williamson , Robert Richter , Tom Vaden , Mika Westerberg , George Cherian Date: Fri, 16 Feb 2018 16:50:03 -0600 Message-ID: <20180216224213.67295.2251.stgit@bhelgaas-glaptop.roam.corp.google.com> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The PCI core currently uses a late_initcall to probe each device for whether it supports reset. This is dangerous because a driver may have already claimed the device by this point, and the PCI core should not interfere with the driver by touching the device on its own. These patches move the probe to be earlier, during enumeration, before a driver has a chance to claim the device. --- Bjorn Helgaas (2): PCI: Probe for device reset support before driver claim PCI: Remove redundant probes for device reset support drivers/pci/pci-sysfs.c | 3 +-- drivers/pci/pci.c | 15 ++++++--------- drivers/pci/probe.c | 3 +++ 3 files changed, 10 insertions(+), 11 deletions(-)