Date: Wed, 1 Jun 2011 00:12:51 +0400 From: Lev Serebryakov <lev@FreeBSD.org> To: freebsd-usb@freebsd.org, n_hibma@FreeBSD.org Subject: Changes to usb/serial: how to distinguish between old and new interfaces in 8-STABLE and 9-CURRENT branches? Message-ID: <1618757683.20110601001251@serebryakov.spb.ru>
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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! --=20 // Black Lion AKA Lev Serebryakov <lev@FreeBSD.org>
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