[Bug 220491] usb_storage connected SD card disconnects/reconnects on resume from suspend

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https://bugzilla.kernel.org/show_bug.cgi?id=220491

--- Comment #42 from Alan Stern (stern@xxxxxxxxxxxxxxxxxxx) ---
The emb-qm77 system sees to be a special case, with a real hardware problem. 
It reports overcurrent conditions on every port during resume -- even ports
that aren't connected to a device.

usb-persist fails when an overcurrent condition is present.  Not because the
condition is disqualifying, but merely because usb-persist was never given the
capability of handling it.  In theory this capability could be added.  But
would it be worthwhile?  How common are systems with this hardware bug?

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