2. You observe an excessive amount of hotplug activity.
I call it excessive because I wonder if it's correct to feed a hotplug event just because $USER_SPACE_PROGRAM has decided to open a /proc/bus/usb/MMM/NNN device.
Are you sure that's what's making it happen? Or is your software maybe trying to set the configuration? That would get rid of the old devices, and create new ones.
Software that tries to change the device configuration would certainly cause lots of hotplugging. Basically that's a bad idea. There's a call to just _reset_ the configuration, that verges on reasonable ... for devices that only have a single driver on the device interfaces.
- Dave
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