From patchwork Thu Aug 23 07:45:47 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Feng Tang X-Patchwork-Id: 1365151 Return-Path: X-Original-To: patchwork-kvm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 7E37440B17 for ; Thu, 23 Aug 2012 07:51:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933647Ab2HWHvg (ORCPT ); Thu, 23 Aug 2012 03:51:36 -0400 Received: from mga09.intel.com ([134.134.136.24]:16167 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932176Ab2HWHve convert rfc822-to-8bit (ORCPT ); Thu, 23 Aug 2012 03:51:34 -0400 Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga102.jf.intel.com with ESMTP; 23 Aug 2012 00:51:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,299,1344236400"; d="scan'208,223";a="184404905" Received: from feng-i7.sh.intel.com (HELO feng-i7) ([10.239.14.125]) by orsmga001.jf.intel.com with ESMTP; 23 Aug 2012 00:51:16 -0700 Date: Thu, 23 Aug 2012 15:45:47 +0800 From: Feng Tang To: Bjorn Helgaas Cc: Fengguang Wu , "Paul E. McKenney" , Steven Rostedt , Avi Kivity , Steven Rostedt , LKML , "kvm@vger.kernel.org" , Kenji Kaneshige , Yinghai Lu , , akpm@linux-foundation.org, gregkh@linuxfoundation.org Subject: [PATCH 2/2] PCI: Remove the obsolete no_pci_devices() check Message-ID: <20120823154547.40d07cd0@feng-i7> In-Reply-To: References: <5017D19B.5080806@redhat.com> <1343738627.27983.30.camel@gandalf.stny.rr.com> <5017D4AB.3090107@redhat.com> <1343740419.27983.33.camel@gandalf.stny.rr.com> <20120731234336.GA5526@localhost> <1343778699.27983.70.camel@gandalf.stny.rr.com> <20120731235705.GW2422@linux.vnet.ibm.com> <1343779778.27983.73.camel@gandalf.stny.rr.com> <20120801001811.GX2422@linux.vnet.ibm.com> <20120801004319.GA7043@localhost> <20120822025008.GA8066@localhost> <20120822154908.2e6ef3c0@feng-i7> Organization: intel X-Mailer: Claws Mail 3.7.6 (GTK+ 2.22.0; i486-pc-linux-gnu) Mime-Version: 1.0 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From 9f2f3bbdf65f669e091c72b9648a4a0394ce28f5 Mon Sep 17 00:00:00 2001 From: Feng Tang Date: Thu, 23 Aug 2012 14:55:48 +0800 Subject: [PATCH 2/2] PCI: Remove the obsolete no_pci_devices() check In function pci_get_subsys() there is a check: /* * pci_find_subsys() can be called on the ide_setup() path, * super-early in boot. But the down_read() will enable local * interrupts, which can cause some machines to crash. So here we * detect and flag that situation and bail out early. */ if (unlikely(no_pci_devices())) return NULL; But there is no ide_setup() now, and no down_read() either, which makes the check absolete. So remove it. Signed-off-by: Feng Tang Cc: Andrew Morton Cc: Greg Kroah-Hartman --- drivers/pci/search.c | 9 --------- 1 files changed, 0 insertions(+), 9 deletions(-) diff --git a/drivers/pci/search.c b/drivers/pci/search.c index 78a08b1..e6e604f 100644 --- a/drivers/pci/search.c +++ b/drivers/pci/search.c @@ -247,15 +247,6 @@ struct pci_dev *pci_get_subsys(unsigned int vendor, unsigned int device, { struct pci_device_id id; - /* - * pci_find_subsys() can be called on the ide_setup() path, - * super-early in boot. But the down_read() will enable local - * interrupts, which can cause some machines to crash. So here we - * detect and flag that situation and bail out early. - */ - if (unlikely(no_pci_devices())) - return NULL; - id.vendor = vendor; id.device = device; id.subvendor = ss_vendor;