Peter Chen a4da4f12b4 usb: chipidea: udc: zero-length packet is only needed for TX
The zero-length packet is the sendor tells the receiver that there
is no more data, so it is only needed at the TX side.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
2015-08-14 09:16:46 +08:00
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