Re: Skipping ttyS2??

[Jeroen Akershoek <jeroena@sara.nl>]

Kay Sievers wrote:

>On Tue, Jun 14, 2005 at 12:27:03PM +0200, Jeroen Akershoek wrote:
>  
>
>>Hello,
>>
>>I've got a system with one serial port on the motherboard and four other
>>ports on two PCI slots (2 each)
>>The kernel detects these as ttyS0 (onboard), ttyS14/S15 (1st PCI card)
>>and ttyS47/S48 (2nd PCI card).
>>We've got some pretty old proprietary software that insists on using
>>ttyS0-3, so I thought I'd just symlink
>>the higher ports.
>>
>>I've made a rules file with the following:
>>
>>KERNEL="ttyS14", SYMLINK="ttyS1"
>>KERNEL="ttyS15", SYMLINK="ttyS2"
>>KERNEL="ttyS47", SYMLINK="ttyS3"
>>KERNEL="ttyS48", SYMLINK="ttyS4"
>>
>>This works fine with one exception: ttyS2 isn't symlinked
>>
>>crw-rw----  1 root dialout 4, 64 Jun 14 10:07 /dev/ttyS0
>>lrwxrwxrwx  1 root root        6 Jun 14 12:15 /dev/ttyS1 -> ttyS14
>>crw-rw----  1 root dialout 4, 66 Jun 14 12:15 /dev/ttyS2
>>lrwxrwxrwx  1 root root        6 Jun 14 12:15 /dev/ttyS3 -> ttyS47
>>lrwxrwxrwx  1 root root        6 Jun 14 12:15 /dev/ttyS4 -> ttyS48
>>
>>udevtest says that the rule matches and that it's creating the link.
>>Changing the order, changing the symlink, changing SYMLINK to NAME or
>>removing
>>the other rules have no effect either. It just seems that this device is
>>skipped or maybe
>>later overridden by the original 4,66 device (udevtest doesn't say
>>anything about it though).
>>    
>>
>
>Does renaming the "original" nodes to something else prevent that
>conflict?
>  
>
Uhm... ok, forget my last reply :)
doing something like:
KERNEL="ttyS2", NAME="ttybackup2"
actually works yes

Why it does that I have no idea though. And why only with ttyS2?

Jeroen


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