/usr/src/linux-3.0.8
root:# make CONFIG_BT_L2CAP=y CONFIG_BT_SCO=y CONFIG_BT_RFCOMM=m CONFIG_BT_BNEP=m CONFIG_BT_BNEP_MC_FILTER=y CONFIG_BT_BNEP_PROTO_FILTER=y CONFIG_BT_CMTP=m CONFIG_BT_HIDP=m M=net/bluetooth
  LD      net/bluetooth/built-in.o
  CC [M]  net/bluetooth/af_bluetooth.o
  CC [M]  net/bluetooth/hci_core.o
  CC [M]  net/bluetooth/hci_conn.o
  CC [M]  net/bluetooth/hci_event.o
  CC [M]  net/bluetooth/mgmt.o
  CC [M]  net/bluetooth/hci_sock.o
  CC [M]  net/bluetooth/hci_sysfs.o
  CC [M]  net/bluetooth/lib.o
  CC [M]  net/bluetooth/l2cap_core.o
net/bluetooth/l2cap_core.c:4201:12: error: redefinition of 'l2cap_init'
include/net/bluetooth/bluetooth.h:212:19: note: previous definition of 'l2cap_init' was here
net/bluetooth/l2cap_core.c:4237:6: error: redefinition of 'l2cap_exit'
include/net/bluetooth/bluetooth.h:217:20: note: previous definition of 'l2cap_exit' was here
make[1]: *** [net/bluetooth/l2cap_core.o] Error 1
make: *** [_module_net/bluetooth] Error 2