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Subject[RFC] ioctl(2) return value

In ALSA we use the return value from ioctl as a simple way to return a
positive number to user space (if the return value is less than 0 we got
error, of course)

We got the doubt that this break some unknown standards or some linux
conventions or Linus taste (at a first glance I'm unable to find
precedents inside kernel tree).

I've looked Singe UNIX Specification, Version 2 and there this seems
perfectly acceptable.

I'd like very much to have some feedback to do the RightThing (tm).

The alternative of course would be to add a result field inside struct
passed by pointer to ioctl call.

Abramo Bagnara

Opera Unica
Via Emilia Interna, 140 Phone: +39.0546.656023
48014 Castel Bolognese (RA) - Italy Fax: +39.0546.656023

ALSA project is
sponsored by SuSE Linux

It sounds good!
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