On Wed, Oct 11, 2017 at 11:04 PM, Alan Stern <[email protected]> wrote: > Also, you should check whether this is for a runtime suspend or a > system suspend. You don't want to go around disconnecting a device > whenever it gets runtime suspended!
Good point, I had not considered runtime suspend. It's not quite so simple though. I make your suggested change (testing PMSG_IS_AUTO in this codepath), then enable autosuspend with: echo auto > /sys/bus/usb/devices/1-9/power/control then the device gets suspended (no interface drivers are loaded) without the port disconnect happening. Now if I go into S3 suspend, the original problem returns: the system wakes up immediately. So that is an imperfection with this approach. Any suggestions for how to proceed? Daniel -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
