Re: [Xen-users] modem on serial port in Dom0

[Tony Breeds <tony@xxxxxxxxxxxxxxxxxx>]

On Tue, Jul 18, 2006 at 09:46:28PM +0200, Holger Schulthei? wrote:
> Hi all,
> 
> I'm using Xen (stable tarball 3.0.2). I want to connect a modem to my serial
> port (ttyS0). After setting "xencons=off" in the module line of my grub, Xen
> doesn't use this port itself (dmesg said nothing about ttyS0).
> 
> So I did a "modprobe parport" and a "modprobe 8250" says:
> FATAL: Error inserting 8250
> (/lib/modules/2.6.16-xen/kernel/drivers/serial/8250.ko): Unknown symbol in
> module, or unknown parameter (see dmesg)
> 
> dmesg:
> 8250: Unknown symbol uart_get_baud_rate
> 8250: Unknown symbol uart_resume_port
> 8250: Unknown symbol uart_register_driver
> 8250: Unknown symbol uart_suspend_port
> 8250: Unknown symbol uart_remove_one_port
> 8250: Unknown symbol uart_update_timeout
> 8250: Unknown symbol uart_unregister_driver
> 8250: Unknown symbol uart_get_divisor
> 8250: Unknown symbol uart_match_port
> 8250: Unknown symbol uart_add_one_port
> 8250: Unknown symbol uart_write_wakeup
> 
> Did anyone have experience in this error / what went wrong?
> Do I have to compile my own Xen0 kernel with serial port support?

Those symbols are exported from serial_core.  try:
modprobe serial_core && modprobe 8250

It /should/ be autolaoded when you modprobe 8250.  I don't know what's
going on there.

Yours Tony

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