Messages in this thread |  | | Date | Fri, 19 Oct 2001 12:21:01 -0700 | From | Mike Fedyk <> | Subject | Re: [RFC] New Driver Model for 2.5 |
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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 features? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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