On Sun, Jan 24, 2021 at 05:31:57PM +0200, Felipe Balbi wrote: > > Hi, > > Daehwan Jung <dh10.jung@xxxxxxxxxxx> writes: > > Sometimes dwc3_gadget_pullup and dwc3_gadget_set_speed are called after > > entering suspend. That's why it needs to check whether suspend > > > > 1. dwc3 sends disconnect uevent and turn off. (suspend) > > 2. Platform side causes pullup or set_speed(e.g., adbd closes ffs node) > > 3. It causes unexpected behavior like ITMON error. > > please collect dwc3 trace events showing this problem. > > -- > balbi Hi, balbi I'm sorry for late reply. I pulled in belo patch and that issue didn't occur usb: dwc3: gadget: Restart DWC3 gadget when enabling pullup @ Wesley cheng But, I think it needs to modify pm_rumtime_put to pm_runtime_put_sync_suspend for syncronization. pm_rumtime_put calls rumtime_idle not runtime_suspend Please check it. usb: dwc3: gadget: Allow runtime suspend if UDC unbinded Best Regards, Jung Daehwan