Changes to usb/serial: how to distinguish between old and new interfaces in 8-STABLE and 9-CURRENT branches?

[Nick Hibma]

Lev,

ABI's change. You need to use __FreeBSD_version. See /usr/include/osreldate.h.

But could we include the driver in the kernel? That way it would be updated when needed.

Nick Hibma
nick at van-laarhoven.org

Want to feel like going on a holiday tomorrow? Try GTD.

On 31 May 2011, at 22:12, Lev Serebryakov wrote:

> Hello, Freebsd-usb.
> 
>  I'm author of `comms/umcs7840' port, which is module for usbcom,
> like `uftdi' and `uplcom' in base system.
> 
>  Last changes, committed to 8-STABLE (and, earlier to HEAD), breaks
> some API/ABI for such modules.
> 
> I have tow questions:
> 
> (1) How could I detect which version have user at compile time? I
> don't use any autoconf/automake framework, my build framework is baed
> on FreeBSD-native bsd.*.mk framework, so I need some define or
> something like this to distinguish these versions. I could not find
> anything suitable in revision 221612 commit.
> 
> (2) WHY, OR WHY old module was loaded without problems?! ABI is
> broken (ucom_detach()? size of struct ucom_softc) and old module
> should complain on load, IMHO! Users will be very surprised when
> computer will reboot after system update!
> 
> -- 
> // Black Lion AKA Lev Serebryakov <lev at FreeBSD.org>
>