Re: US Robotics (Hardware) Modem Not Detected

From: Russell King
Date: Wed Jul 27 2005 - 08:59:13 EST

On Wed, Jul 27, 2005 at 07:45:21AM -0600, Brad Davis wrote:
> I'm trying to get a PCI-USRobotics Modem (Yes, it is a true hardware
> modem) working on a G4 with Kernel version 2.6.10/2.6.11.
> When I try to "modprobe 8250_pci". I get the following
> error message:
> WARNING: Error inserting 8250
> (/lib/modules/2.6.10enrock.2/kernel/drivers/serial/8250.ko): No such
> device

This would be the root case. 8250 is _never_ supposed to fail with
ENODEV, even if it doesn't detect any devices itself. And doesn't
fail like this.

> FATAL: Error inserting 8250_pci
> (/lib/modules/2.6.10enrock.2/kernel/drivers/serial/8250_pci.ko):
> Unknown symbol in module, or unknown parameter (see dmesg)
> It looks to me like the 8250 module isn't recognizing the modem as a
> seial port. The appropriate lines from dmesg are:
> serial8250_init: nothing to do on PowerMac

serial8250_init does not contain any such message, so you're not
running a mainline kernel, but some patched version. Are these
patches available somewhere?

I guess these patches are your problem, and it seems that there's
at least one which is completely unnecessary or inappropriate.

Russell King
Linux kernel 2.6 ARM Linux -
maintainer of: 2.6 Serial core
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