On 22.10.2018 20:42, Aaron Ma wrote:
Realtek USB3.0 Card Reader [0bda:0328] reports wrong port status on Cannon lake PCH USB3.1 xHCI [8086:a36d] after resume from S3, after clear port reset it works fine. Since this device is registered on USB3 roothub at boot, when port status reports not superspeed, xhci_get_port_status will call an uninitialized completion in bus_state[0]. Kernel will hang because of NULL pointer. Restrict the USB2 resume status check in USB2 roothub to fix hang issue. Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
Thanks, adding to queue, will send forward after rc1 -Mathias
