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From: David Miller <davem@davemloft.net>
Subject: Re: r8169 mac reading/writing broken
Date: Sat, 27 Mar 2010 16:30:05 -0700 (PDT)
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From: Ben Hutchings <ben@decadent.org.uk>
Date: Sat, 27 Mar 2010 23:20:54 +0000

> I wonder whether there are special rules that need to be followed
> for updating such registers and which the driver is not following,
> or a more general bug in the Realtek chips that should be
> consistently worked-around for all 64-bit registers.

I suspect that MMIO to 64-bit registers in 32-bit chunks is not
reliable with these parts, given all of the information we have so
far.