Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755464Ab3DLPqP (ORCPT ); Fri, 12 Apr 2013 11:46:15 -0400 Received: from mail-pa0-f42.google.com ([209.85.220.42]:37451 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752847Ab3DLPqM (ORCPT ); Fri, 12 Apr 2013 11:46:12 -0400 From: Jiang Liu To: Bjorn Helgaas , "Rafael J . Wysocki" Cc: Jiang Liu , Yinghai Lu , Yijing Wang , Jiang Liu , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, Greg Kroah-Hartman , ACPI Devel Maling List , Toshi Kani , Myron Stowe , "Rafael J. Wysocki" Subject: [PATCH v9 01/16] PCI: do not check is_added flag in pci_remove_bus() Date: Fri, 12 Apr 2013 23:44:15 +0800 Message-Id: <1365781470-32379-2-git-send-email-jiang.liu@huawei.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1365781470-32379-1-git-send-email-jiang.liu@huawei.com> References: <1365781470-32379-1-git-send-email-jiang.liu@huawei.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1527 Lines: 48 The is_added flag in struct pci_bus is always set after invoking device_register() and pci_create_legacy_files(). The related code paths are: 1) pci_create_root_bus() and pci_add_new_bus() bus = pci_alloc_bus() device_register(&bus->dev) pci_create_legacy_file(bus) 2.a) pci_scan_child_bus(bus) set is_added flag for PCI root buses 2.b) pci_bus_add_devices(bus) set is_added flag for normal PCI buses So pci_remove_bus() shouldn't use is_added flag to guard invoking of pci_remove_lagecy_files() and device_unregister(). Signed-off-by: Jiang Liu Signed-off-by: Yijing Wang Cc: Yinghai Lu Cc: "Rafael J. Wysocki" Cc: Toshi Kani Cc: linux-pci@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- drivers/pci/remove.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c index cc875e6..a831880 100644 --- a/drivers/pci/remove.c +++ b/drivers/pci/remove.c @@ -50,9 +50,6 @@ void pci_remove_bus(struct pci_bus *bus) list_del(&bus->node); pci_bus_release_busn_res(bus); up_write(&pci_bus_sem); - if (!bus->is_added) - return; - pci_remove_legacy_files(bus); device_unregister(&bus->dev); } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/