diff --git a/usr.sbin/bluetooth/bthidd/hid.c b/usr.sbin/bluetooth/bthidd/hid.c index c68865b0a3db..5eb7592da5c9 100644 --- a/usr.sbin/bluetooth/bthidd/hid.c +++ b/usr.sbin/bluetooth/bthidd/hid.c @@ -165,9 +165,21 @@ hid_interrupt(bthid_session_p s, uint8_t *data, int32_t len) continue; page = HID_PAGE(h.usage); - usage = HID_USAGE(h.usage); val = hid_get_data(data, &h); + /* + * When the input field is an array and the usage is specified + * with a range instead of an ID, we have to derive the actual + * usage by using the item value as an index in the usage range + * list. + */ + if ((h.flags & HIO_VARIABLE)) { + usage = HID_USAGE(h.usage); + } else { + const uint32_t usage_offset = val - h.logical_minimum; + usage = HID_USAGE(h.usage_minimum + usage_offset); + } + switch (page) { case HUP_GENERIC_DESKTOP: switch (usage) {