> "Steven N. Hirsch" wrote:
>
> > The psaux detection code in 2.2.x fails to find a valid device under some
> > circumstances. I fought this battle last weekend on an older 486 box with
> > PS2 mouse on the motherboard. Haven't had the time to debug the probe so
>
> > + #if 0
> > if (!detect_auxiliary_port())
> > return -EIO;
> > ! #endif
>
> > Please note that this is a rude hack. The maintainer should be made aware
> > that it is missing devices on some platforms.
>
> Ok, I guess I am the maintainer. And, yes, I am aware of a few reports
> of machines on which the detection does not work. The problem is that
> there seem to be a lot of different implementations of the PS/2 mouse
> port out there. The old detection code seemed to work ok, but was
> removed because the mouse had to be plugged in at boot in order to be
> detected. Then, for a few kernel versions, we didn't have any detection
> at all, but always assumed the port was present. This had the slight
> disadvantage of locking up the keyboard if a nonexistent mouse port was
> accessed.
>
> Suggestions? Personally, I'd like to see the old BIOS based code back.
That would be my vote as well. If folks really need to hot-plug the
mouse, then maybe a /proc/* entry that we can poke to flip it on?
Steve
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