Re: Bug#294123: udev: Bad parsing of regular expressions in *.rules

[Greg KH <greg@kroah.com>]

On Sun, Feb 13, 2005 at 04:14:41AM +0100, Kay Sievers wrote:
> On Tue, 2005-02-08 at 21:53 -0800, Greg KH wrote:
> >On Wed, Feb 09, 2005 at 03:24:31AM +0100, Kay Sievers wrote:
> >> Can't you match against some interface attributes in sysfs, which are
> >> telling you which one is the first interface of this device?
> >> 
> >> You may compare: 
> >>   udevinfo -a -p /class/tty/ttyUSB0
> >>   udevinfo -a -p /class/tty/ttyUSB1
> >> 
> >> if you find a difference between both interfaces to match against, that
> >> is not dependent on the kernel device name.
> >
> >This is a real tough one to try to match on, as these both point to the
> >same exact physical device.  Same USB interface even.  It's a pain,
> >stupid palm devices...
> 
> Ahh, I see. So we may follow the link to the physical device and look
> for the name of the _first_ serial interface of this device? Would this
> solve the problem?

Heh, not quite, as you usually want the _second_ serial interface to
sync off of, the first one is not useful at all (well, some tools use
it, but 99% of the users never will care about it.)

And then there's the fun problem of some Sony devices creating two
serial "devices" where the second one is just a "fake" one, and you
really need to connect to the first.

Bah, sometimes I really hate Palm...

thanks,

greg k-h


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