On Thu, 2017-09-14 at 23:14 +0530, Srinath Mannam wrote: > > atomic_inc_return(&dev->enable_cnt) in function > pci_enable_device_flags enables passed pcie device. > !pci_is_enabled(bridge) check in "if (bridge && > !pci_is_enabled(bridge))" checks for bridge device of previous pcie > device. > So it will not stop bus_master of bridge device. It also doesn't *enable* it though, does it? johannes