On Tue, Aug 30, 2022 at 09:50:03PM +0200, jflf_kernel@xxxxxxx wrote: > > On 30/08/2022 16.47, Oliver Neukum wrote: > > > 1) force a reset after a resume and call reset_resume() instead of resume() > > 2) block autosuspend if remote wakeup is required > > > > I suspect you are actually using the second effect. Have you > > tested with "usbcore.autosuspend=-1" on the kernel command line. > > After further testing, your suspicion is correct. > > TL;DR: the two VL812 hubs don't behave well when suspended. > > I'd like to prepare a better patch for that issue. What's the recommended strategy? The current patch works, even if only as a side effect and when there's a wakeup source downstream. It's currently in Greg KH's usb-linus branch, and will land in linux-next at some point. I'm tempted to let it be and undo it later in the better patch. Is that acceptable? Or should I ask Greg KH to pull it? I can revert it if you want me to, just let me know. thanks, greg k-h
