Hi, Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> writes: > On 01.12.2015 16:32, Felipe Balbi wrote: >> >> Hi, >> >> Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> writes: >>> usb2 ports need to signal resume for 20ms before moving to U0 state. >> >> at least 20ms ;-) Recently, we decided to drive resume for 40ms to >> support devices with broken FW. >> > > True, but specs talk about 20ms, and I'm just trying to give some context for what's > going on. This testpatch doesn't touch the timings. > > Daniel is able to trigger a USB2 xhci resume issue which I hope is fixed with this patch. > This is especially made for his setup running a 4.3 kernel > > If this works I'll clean up all the "20ms" in the commit message and comments. > > Just noticed that xhci USB2 host initiated resume uses a hardcoded msleep(20). > That needs to be changed to USB_RESUME_TIMEOUT at some point. > For now I'm just interested in knowing if this patch works. > >> >> this 'v2' note doesn't have to go into commit log, IMO. >> > > It's going to be cleaned out as well, just there to explain to Daniel, and the world why > a second version of the testpatch was created. all right, thanks ;-) -- balbi
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