Messages in this thread Patch in this message | | | From | Jiang Liu <> | 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 |
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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 <jiang.liu@huawei.com> Signed-off-by: Yijing Wang <wangyijing@huawei.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Cc: Toshi Kani <toshi.kani@hp.com> 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
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