Re: More info on port 80 symptoms on MCP51 machine.

[Rene Herman]

On 12-12-07 21:26, Rene Herman wrote:

> On 12-12-07 21:07, David P. Reed wrote:

> > Someone might have an in to nVidia to clarify this, since I don't.  In 
> > any case, the udelay(2) approach seems to be a safe fix for this machine.

By the way, _does_ anyone have a contact at nVidia who could clarify? Alan 
maybe? I'm quite curious what they did...

Summary:

Unless after booting with "acpi=off", outputs to port 0x80 (the legacy way 
to delay I/O) reliably, but not immediately, hang MCP51 machines. Outputs to 
port 0xed do not indicating it's a not a generic bus abort problem.

Rene.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/