Hi John, ? 2016?02?03? 08:03, John Youn ??: > On 2/1/2016 6:53 PM, Caesar Wang wrote: >> John, >> >> I will suggest the msleep(25) delay should put in >> 'dwc2_force_dr_mode()' instead of the 'dwc2_clear_force_mode()' >> > Hi Caesar, > > Are you saying that just msleep(25) in that function like this solves > your issue? > > diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c > index 39a0fa8..e8a9688 100644 > --- a/drivers/usb/dwc2/core.c > +++ b/drivers/usb/dwc2/core.c > @@ -625,6 +625,8 @@ void dwc2_force_dr_mode(struct dwc2_hsotg *hsotg) > __func__, hsotg->dr_mode); > break; > } > + > + msleep(25); Yep, that will solve this issue. > } > > > > Although that is still not ideal, it's better than the alternative. > > Regards, > John > > -- > Thanks, > Caesar