[PATCH] PCI: check if a bus is added before removing it

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Signed-off-by: Yu Zhao <yu.zhao@xxxxxxxxx>
---
 drivers/pci/remove.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/pci/remove.c b/drivers/pci/remove.c
index 042e089..caf8e1e 100644
--- a/drivers/pci/remove.c
+++ b/drivers/pci/remove.c
@@ -71,6 +71,9 @@ void pci_remove_bus(struct pci_bus *pci_bus)
 	down_write(&pci_bus_sem);
 	list_del(&pci_bus->node);
 	up_write(&pci_bus_sem);
+	if (!pci_bus->is_added)
+		return;
+
 	pci_remove_legacy_files(pci_bus);
 	device_remove_file(&pci_bus->dev, &dev_attr_cpuaffinity);
 	device_remove_file(&pci_bus->dev, &dev_attr_cpulistaffinity);
-- 
1.6.1

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