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SubjectRe: [RFC] New Driver Model for 2.5
On Fri, Oct 19, 2001 at 09:02:09PM +0200, Tim Jansen wrote:
> On Friday 19 October 2001 20:26, Patrick Mochel wrote:
> > There are equivalents in USB. But, neither of them are globally unique
> > identifiers for the device. That doesn't necessarily mean that one
> > couldn't be ascertained from the device; ethernet cards do have MAC
> > addresses. But, I don't think that many will have a ID/serial number.
> > [...]
> > Which leads me to the question: what real benefit does this have? Why
> > would you ever want to do a global search in kernel space for a particular
> > device?
> For example for harddisks. You usually want them to be mounted in the same
> directory.

When is /etc/fstab going to support this?

#Or if you have several printers of the same type connected your
> computer you need a way of identifying them.

/dev/ttyS0 and /dev/lp0

>Or for ethernet adapters:
> because each is connected to a different network, so you need to assign
> different IP addresses to them.

I haven't seen anything assign ethX assign a certain order, except for
ordered module loading, and then if there are multiple devices with the same
driver, the order is chosen by bus scanning order, or module option.

> Actually most USB harddisks, printers and network adapters have unique serial
> number (you have to be careful though as some claim to have a serial number,
> but it is not unique).

How different do you expect this new driver model to be?

Does anyone know if devfs will, or has any plans to support any of the above
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