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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH 2/8] Add uli1575 pci-bridge sector to MPC8641HPCN dts file.
Date: Sun, 3 Jun 2007 09:42:55 +0200
To: Gabriel Paubert <paubert@iram.es>
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> Maybe the 0x4d0/4d1 ports can be accessed with 16 bit
> instructions, I don't know. What I know for sure is that
> accessing port 0x20 with an inl/outl on some boards
> locks immediately the system up (perhaps through infinite
> retries).

And inw/outw?  There are only two bytes of registers
there after all.


Segher