On Fri, Sep 6, 2024 at 5:58 PM Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx> wrote: > > On Fri, Sep 06, 2024, Roy Luo wrote: > > When dwc3_resume_common() returns an error, runtime pm is left in > > disabled state in dwc3_resume(). The next dwc3_suspend_common() > > What issue did you see when dwc3_suspend_common is not skipped? Apologies for the delayed response. To answer your question, if dwc3_suspend_common() isn't skipped, it can lead to issues because dwc->dev is already in a suspended state. This could mean its parent devices (like the power domain or glue driver) are also suspended and may have released resources that dwc requires. Consequently, calling dwc3_suspend_common() in this situation could result in attempts to access unclocked or unpowered registers. Regards, Roy Luo
