commit 026b3a0502fb7dde2b2d8fb2c0f245f35cf167bc
author Sam Lantinga <slouken@libsdl.org> Fri Dec 20 21:00:16 2019 -0800
committer Sam Lantinga <slouken@libsdl.org> Fri Dec 20 21:00:16 2019 -0800
tree f2ab2ac29c2a8d26be3fbcc2edd902795b20b4b3
parent c759387989d422a680821681c63dea76ad275420

Fixed duplicate controller entries on Mac OS X when using libusb, due to the HID interface number not being available in the Mac OS X HID code.

src/hidapi/SDL_hidapi.c

diff --git a/src/hidapi/SDL_hidapi.c b/src/hidapi/SDL_hidapi.c
index a06c2cf..c35c44f 100644
--- a/src/hidapi/SDL_hidapi.c
+++ b/src/hidapi/SDL_hidapi.c
@@ -559,7 +559,7 @@
             for (raw_dev = raw_devs; raw_dev; raw_dev = raw_dev->next) {
                 if (usb_dev->vendor_id == raw_dev->vendor_id &&
                     usb_dev->product_id == raw_dev->product_id &&
-                    usb_dev->interface_number == raw_dev->interface_number) {
+                    (raw_dev->interface_number < 0 || usb_dev->interface_number == raw_dev->interface_number)) {
                     bFound = SDL_TRUE;
                     break;
                 }