Re: AW: 8250_pci -> change device name

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On 05/06/2015 02:34 AM, Hänel-Baas, Alexander wrote:
> 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   

It's not clear to me what you want to have happen in case 2.


> 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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