net/bluetooth/hci_sysfs.c:16:25: error: incomplete definition of type 'struct sco_conn'
net/bluetooth/hci_sysfs.c:16:25: error: offsetof of incomplete type 'struct sco_conn'
net/bluetooth/hci_sysfs.c:16:19: error: initializing 'struct sco_conn *' with an expression of incompatible type 'void'
net/bluetooth/hci_sysfs.c:17:5: error: incomplete definition of type 'struct sco_conn'