[PATCH] of_serial: ignore unknown serial port

[Paul Mackerras]

Ishizaki Kou writes:

> Current of_serial driver assumes unknown serial port to be 8250. But
> this behavior may cause fatal problems when the serial port is not
> 8250. This patch corrects probe routine to ignore unknown serial port.
> 
> Signed-off-by: Kou Ishizaki <kou.ishizaki at toshiba.co.jp>
> Cc: Arnd Bergmann <arnd at arndb.de>

Is this a bugfix that needs to go in 2.6.22?  Likewise, is your next
patch (of_serial: add port type checking) needed in 2.6.22?

Paul.