Re: no go for me with serial console, bug 364637 - WAS: Xserver G5 usb keyboard not loaded ...

[Sven Luther <sven.luther@wanadoo.fr>]

On Thu, Apr 27, 2006 at 10:16:34AM -0700, Brad Boyer wrote:
> On Thu, Apr 27, 2006 at 09:11:32PM +0200, Sven Luther wrote:
> > > What is supposed to happen after 'Trying to im_free...' ?
> > 
> > Attaching the full log. The isa stuff is probably related to the graphic card.
> > 
> 
> > Serial: 8250/16550 driver $Revision: 1.90 $ 4 ports, IRQ sharing disabled
> > pmac_zilog: 0.6 (Benjamin Herrenschmidt <benh@kernel.crashing.org>)
> > pmac_zilog: Error registering serial device, disabling pmac_zilog.
> > pmac_zilog: Did another serial driver already claim the minors?
> > Trying to im_free nonexistent area (d00008008216c000)
> > Trying to im_free nonexistent area (d00008008216e000)
> 
> Here is the problem. The 8250/16550 driver used to have a check to make
> it bail out on all PowerMac models. It used to print out a message to
> that fact, too. The pmac_zilog driver is dying a miserable death because
> it thinks it should be the only serial driver, but in this case it isn't.

Oh well, i know what this problem is then. We had a patch to stop the
8250/16550 driver from loading on arches it had nothing to do (since it used
to poke random pmac register and die), i guess this one was not ported over to
the 2.6.16 arch=powerpc tree.

Investigation is needed here.

Friendly,

Sven Luther