Commit 654b75e0 authored by Yu Zhao's avatar Yu Zhao Committed by Jesse Barnes
Browse files

PCI: check if bus has a proper bridge device before triggering SBR 



For devices attached to the root bus, we can't trigger Secondary Bus
Reset because there is no bridge device associated with the bus. So
need to check bus->self again NULL first before using it.

Reviewed-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarYu Zhao <yu.zhao@intel.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
parent 977badb2

drivers/pci/pci.c

+1 −1
Original line number Diff line number Diff line
@@ -2171,7 +2171,7 @@ static int pci_parent_bus_reset(struct pci_dev *dev, int probe) 
	u16 ctrl;

	struct pci_dev *pdev;



	if (dev->subordinate)

	if (pci_is_root_bus(dev->bus) || dev->subordinate || !dev->bus->self)

		return -ENOTTY;



	list_for_each_entry(pdev, &dev->bus->devices, bus_list)