On 19/01/17 13:59, Felipe Balbi wrote: > > Hi, > > Roger Quadros <rogerq@xxxxxx> writes: >> Hi Felipe, >> >> We have system suspend resume working on dra7-evm in v4.10-rc but >> dwc3 gadget breaks after system suspend resume. >> >> Any hints how to fix it? Full backtrace below. > > from a quick look. END_TRANSFER is timing out, most likely. Tracepoints > should give better hints. > > We might have a bug in dwc3_gadget_suspend(). No idea what's really > going on. > >> Another message that looks worry-some is >> "[ 61.495313] omap-dwc3 48880000.omap_dwc3_1: runtime PM trying to suspend device but active child" > > did you implement runtime PM on dwc3-omap.c? Look at dwc3-pci.c for reference. > >> If I unload gadget, then suspend/resume system then load gadget everything works fine. > > right, dwc3 UDC will already have been toredown. Unfortunately I can't > spend a lot of time on this, so you're gonna have to try to fix it and > provide a patch :-s Quite busy looking at some f_fs weirdness. No problem. I'll debug this issue. cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
