Felipe, On 19/01/17 14:16, Roger Quadros wrote: > 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. Bisected to bad commit 4eb3d981e7344ded9e5a8725ed934dd8f8056daf "usb: dwc3: core: simplify suspend/resume operations". 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
