On Tue, Aug 29, 2017 at 04:28:53PM +0300, Mathias Nyman wrote: > Then again it might be a bit too drastic to kill xhci just because > we read 0xffffffff once from a mmio xhci register. Maybe we should > return an error a couple times before actually tearing down xhci. > > This tight check was originally done to detect pci hotplug removed > hosts as soon as possible. Just make pci_dev_is_disconnected() public to detect PCI hot removal. We *know* when the device was hot removed, so I think there's no need to guess that based on reading "all ones" from mmio (which may happen for entirely legitimate reasons unrelated to hot removal). Thanks, Lukas
