[PATCH] of_serial: add port type checking

[Arnd Bergmann]

On Thursday 31 May 2007, Ishizaki Kou wrote:
> 
> Currently, of_serial driver supports only 8250 compatible ports, but
> prepares that others can easily be added. Yet unregister routine
> assumes port is 8250. This patch corrects unregister routine to check
> port type.
> 
> Signed-off-by: Kou Ishizaki <kou.ishizaki at toshiba.co.jp>
> Cc: Arnd Bergmann <arnd at arndb.de>

Acked-by: Arnd Bergmann <arnd at arndb.de>