Is arch/ppc/kernel/ppc4xx_serial.c of any relevance any more? It doesn't include any code unless CONFIG_DEBUG_BRINGUP is defined, and it doesn't look like it would compile, let alone be called, if it was defined.
--
David Gibson | For every complex problem there is a
david at gibson.dropbear.id.au | solution which is simple, neat and
| wrong. -- H.L. Mencken
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