This is an AUR package that patches the kernel bluetooth module (btusb.c) in order to fix a duplicate address bug for certain Qualcomm bluetooth devices.
For more information:
http://www.spinics.net/lists/linux-bluetooth/msg66419.html
https://bugzilla.kernel.org/show_bug.cgi?id=99371
https://bbs.archlinux.org/viewtopic.php?pid=1703624
If the AUR package doesn't work please flag or comment on the package page or raise an issue/PR on this repo.