[U-Boot] [PATCH] usb: ci_udc: fix emissions of ZLPs

[Marek Vasut]

On Saturday, September 12, 2015 at 01:10:02 AM, Stephen Warren wrote:
> From: Stephen Warren <swarren at nvidia.com>
> 
> Commit 6a132416359e "ci_udc: Update the ci_udc driver to support bulk
> transfers" caused the value of "len" to change without updating subsquent
> users of that variable in ci_ep_submit_next_request(). This caused the
> code that detects when to emit ZLPs (Zero Length Packets) never to
> trigger, which in turn caused host timeouts when a ZLP was required,
> which in turn broke tests/dfu/, even despite the assertion in that
> commit's description that "These changes are tested for both the DFU and
> lthor."
> 
> Fix this by modifying the added dtd iteration code not to modify "len",
> but rather to keep state in a separate variable. Rename the variables
> while we're at it so they describe their purpose better.
> 
> Fixes: 6a132416359e ("ci_udc: Update the ci_udc driver to support bulk
> transfers") Cc: Siva Durga Prasad Paladugu
> <siva.durga.paladugu at xilinx.com>
> Signed-off-by: Stephen Warren <swarren at nvidia.com>

Applied, thanks!

Best regards,
Marek Vasut