It's hard to reproduce a unknow command in real world, so we
use "Bus Hound" in Windows to simulate this situlation.
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Use "Bus Hound" to send a zero-length error command via control ep
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"Bus Hound" got a canceled message from windows driver after 10 sec
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USB Analyzer
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in normal case, when we got error command with non-zero length,
we set a
stall in control IN, then Windows host receive stall
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in this special case, when we got error command with zero length,
we set a
stall in control IN, but Windows host waiting in OUT stage
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After applying this [PATCH] usb: dwc2: gadget: stall handshakes returned by control pipes in status stage ,
we can stall error command ether non-zero length or zero-length
