AW: 8250_pci -> change device name

Hänel-Baas, Alexander <alexander.haenel-baas@xxxxxxxxxxxxx> · Wed, 6 May 2015 06:34:16 +0000

Hi,

thanks four your reply.

>The right way to handle this would be to create a symlink in a udev script (or rc.d scripts if you don't have/use udev).
>Regards,
>Peter Hurley

>Why not just change it in userspace using a tool like udev?  Don't force the kernel to do something like this.
>thanks,
>greg k-h

I have played with udev and yes i can create a symlink when the 8250_pci.ko is load.
But this is not the right solution for my problem:

My System has a SIO-Uart pluggable over the PLC-Bus and a PCI ValleyView HSUART connected over the pci-bus.

So the tty enumeration look like this:
SIO-UART      -> ttyS0 -> this is the kernel console
                          -> ttyS1
PCI-HSUART -> ttyS2 -> this is the console that can use by the userspace program
                          -> ttyS3   

Case 2: the SIO-Uart is not connected.
PCI-HSUART -> ttyS0 -> and now the kernel prompt  message and the userspace program  too
                          -> ttyS1   

In this case I need a free tty device for the PCI-HSUART and so I hope I can changed the device name only for the 8250_pci device to do this.

Any ideas what can I do?

Regards,
Alexander

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