microcode, devfs: Wrong interface change in 2.4.25

[Giacomo A. Catenazzi]

Hello!

From the 2.4.25, devfs doesn't create anymore the microcode
device in /dev/cpu/microcode (as expected from in devices.txt
and LANANA) but in /dev/misc/microcode. The /dev/cpu/microcode
path is also hardcoded also in microcode_ctl and distributions
create only /dev/cpu/microcode.

So last microcode patch (in 2.4.25) is wrong.
You should add again the /dev/cpu/microcode support in devfs, so
that the normal and stable interface is maintained (in stable
kernel serie)

ciao
	giacomo



Ryan Underwood wrote:

> On Mon, Feb 23, 2004 at 09:47:58AM +0100, Giacomo A. Catenazzi wrote:
>
> > > What I meant is that the name "/dev/misc/microcode" must be used instead
> > > of "/dev/cpu/microcode", because the microcode driver in 2.4.25 no
> > > longer registers with devfs.
> >
> > I don't undestand.
> > Do you say that devfs will register only /dev/misc/microcode ?
>
>
> No, the microcode driver only registers with misc.
>
>
> > So if devfs will register misc/microcode, it is probably
> > a kernel bug (interface should not change!) or a problem
> > with LANANA (in this case I should change misc microcode
> > in drivers, but after an update to 'makedev' package.
>
>
> Examine microcode.c driver diff between 2.4.23 and 2.4.25 in the init
> function.  The removed code is obvious.
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