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Date: Wed, 23 Aug 2006 16:13:36 +1000
From: Paul Mackerras <paulus@samba.org>
To: Kumar Gala <galak@kernel.crashing.org>
Subject: Re: [PATCH ] powerpc:  pass UPIO_TSI flag to 8259 serial driver
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Kumar Gala writes:

> Maybe, I'm missing something, but why do we need this?  Why doesn't  
> iotype == UPIO_MEM work for the TSI?

It seems that there are some workarounds for TSI "features" in
drivers/serial/8250.c that this will invoke.

Paul.