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e5a7bb548a
Commit c4438b3c introduced a regression by failing to check for the
presence of a function in the backend when called on a composite device.
Fix this by introducing a new helper macro and checking for function
pointers at all necessary locations.
Closes #383
Signed-off-by: Chris Dickens <christopher.a.dickens@gmail.com>
libusb
libusb is a library for USB device access from Linux, macOS, Windows, OpenBSD/NetBSD and Haiku userspace. It is written in C (Haiku backend in C++) and licensed under the GNU Lesser General Public License version 2.1 or, at your option, any later version (see COPYING).
libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems. Please see the PORTING file for more information.
libusb homepage: http://libusb.info/
Developers will wish to consult the API documentation: http://api.libusb.info
Use the mailing list for questions, comments, etc: http://mailing-list.libusb.info
- Hans de Goede hdegoede@redhat.com
- Xiaofan Chen xiaofanc@gmail.com
- Ludovic Rousseau ludovic.rousseau@gmail.com
- Nathan Hjelm hjelmn@cs.unm.edu
- Chris Dickens christopher.a.dickens@gmail.com
(Please use the mailing list rather than mailing developers directly)