In message 20160426181301.92F78100386@atlas.denx.de I wrote:
Dear Stephen,
In message 571F94BE.2030106@wwwdotorg.org you wrote:
Guidance on "non-trivial" isn't given. I would take it to mean anything other than typos and whitespace fixes.
recommended search term: Copyright Creativity Requirement
Quoting from [1]:
4.1 Non-trivial originality (Durham)
In Durham Industries, Inc. v. Tomy Corp.,21 the Second Circuit Court of Appeals stated that copyright’s applicability to derivative works is subject to the limitation that “the original aspects of a derivative work must be more than trivial.” ... However, the Alfred Bell court considered non-trivial variation to be a requirement of the originality standard, and merely a restatement of the principle that, to be original, a work must be “recognizably [the author’s] own.” ...
4.2 Substantial difference (Gracen)
[1] https://softwarefreedom.org/resources/2007/originality-requirements.html
Best regards,
Wolfgang Denk