On 09/21/2015 11:13 AM, Fabio Estevam wrote:
Hi Stephen,
On Wed, Jun 11, 2014 at 7:03 PM, Stephen Warren <[email protected]> wrote:
From: Stephen Warren <[email protected]>
This allows SPI Flash to be programmed using DFU.
Signed-off-by: Stephen Warren <[email protected]>
Is this still working in mainline U-boot?
I haven't tested SF support recently (only MMC). However, it should
still work:-) Are you using ci_udc? If so, make sure you have this very
recent patch:
commit b337b3b2a53f112a217f4bd31307b02f830bb787
Author: Stephen Warren <[email protected]>
Date: Fri Sep 11 17:10:02 2015 -0600
usb: ci_udc: fix emissions of ZLPs
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 <[email protected]>
Signed-off-by: Stephen Warren <[email protected]>
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