Messages in this thread | | | Subject | Re: [linux-usb] Re: USB device allocation | Date | Sun, 10 Oct 1999 01:18:24 -0300 | From | Horst von Brand <> |
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Johannes Erdfelt <jerdfelt@sventech.com> said:
[...]
> No, no, no. No one seems to understand the issues at stake here.
> I have 2 modems, I plug modem A in first, it becomes (hypothetical) > device /dev/modem1. I plug in modem B second, it becomes /dev/modem2. > > Now, I unplug both and plug modem B in first, it becomes modem1 now with > the current naming system. > > This is completely unacceptable.
Worse yet, you plug in A, into socket 1 in wall. Plug in B, into socket 2 in wall. Now permute all variables, throw in modem C as a replacement for A which went south. How is the poor kernel going to know which modem device goes where?
> Does devfs solve this problem right now? No. Will it be easy to solve > this problem with devfs when an appropriate algorithm to name PnP > devices is created. Yes.
But that mythical algorithm is impossible (see above). -- Horst von Brand vonbrand@sleipnir.valparaiso.cl Casilla 9G, Viña del Mar, Chile +56 32 672616
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