On Fri, 2021-11-26 at 19:09 +0800, Neal Liu wrote: > > @@ -417,10 +435,9 @@ enum std_req_rc ast_vhub_std_hub_request(struct ast_vhub_ep *ep, > > /* GET/SET_CONFIGURATION */ > case DeviceRequest | USB_REQ_GET_CONFIGURATION: > - return ast_vhub_simple_reply(ep, 1); > + return ast_vhub_simple_reply(ep, vhub->current_config); > case DeviceOutRequest | USB_REQ_SET_CONFIGURATION: > - if (wValue != 1) > - return std_req_stall; > + vhub->current_config = wValue; > return std_req_complete; This is odd.. why should we support arbitrary SET_CONFIGURATION for configs we don't support ? Otherwise looks good. Cheers, Ben.