udev and USB ID

udev and USB ID

[Paul Ionescu]

How can I put in /etc/udev/udev.rules something like
SYSFS_id="0c76:0005" ?
I tried last night udev, and is really great, but it took me one hour to
discover why it ignores the line  SYSFS_vendor="OLYMPUS".
Well the good news is that udev was fine and not ignoring this line, BUT
the good guys at olympus made a joke and I had to put it 
SYSFS_vendor="OLYMPUS " <- Yes with a trailing space. They put an extra
space at the end :(
And it was a pain to find it, I had to use strace on udev, just because
I didn't know any other choice.
So, I think it is easier to have the possibility to match on ID (USB,
PCI or whatever)




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Re: udev and USB ID

[Greg KH]

On Sat, Jan 10, 2004 at 05:26:52PM +0200, Paul Ionescu wrote:
> How can I put in /etc/udev/udev.rules something like
> SYSFS_id="0c76:0005" ?

SYSFS_idVendor="0c76", SYSFS_idProduct="0005"

should work just fine.  You can look for more than one sysfs attribute.

> I tried last night udev, and is really great, but it took me one hour to
> discover why it ignores the line  SYSFS_vendor="OLYMPUS".
> Well the good news is that udev was fine and not ignoring this line, BUT
> the good guys at olympus made a joke and I had to put it 
> SYSFS_vendor="OLYMPUS " <- Yes with a trailing space. They put an extra
> space at the end :(
> And it was a pain to find it, I had to use strace on udev, just because
> I didn't know any other choice.

Dump the sysfs file through a hex dump program (like xxd).  That
trailing space is quite common for digital cameras for some reason (took
me forever to figure it out too...)

thanks,

greg k-h


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