On Mon, Oct 16, 2017 at 8:06 AM, Johan Hovold [off-list ref] wrote:

Add missing error handling for tty-driver open() which may fail (e.g. if
resource allocation fails or if a port is being disconnected).

Note that close() must be called also in case of failed open() and that
the operation sanity check is amended to catch buggy drivers.

That's a very odd pattern. Wouldn't a must_check annotation be enough?

Rob