tree a3e33a98fefb69486c3f7ac4fd7a6b361a8d3366
parent 9c7ebe7683f69dabe1cabd871a6957b1fe3d30b4
author Stephen Warren <swarren@nvidia.com> 1402435659 -0600
committer Marek Vasut <marex@denx.de> 1402446365 +0200

usb: ci_udc: terminate ep0 INs with a zlp when required

Sometimes, a zero-length packet is required at the end of an IN
transaction so that the host knows the device is done sending data.
Enhance ci_udc to send a zlp when necessary. See the comments for
more details.

Signed-off-by: Stephen Warren <swarren@nvidia.com>