Bluetooth: Always compile SCO and L2CAP in Bluetooth Core

The handling of SCO audio links and the L2CAP protocol are essential to
any system with Bluetooth thus are always compiled in from now on.

Signed-off-by: Ulisses Furquim <[e-mail]>
Acked-by: Marcel Holtmann <[e-mail]>
Signed-off-by: Gustavo F. Padovan <[e-mail]>

include/net/bluetooth/bluetooth.h

···
 
 extern struct dentry *bt_debugfs;
 
-#ifdef CONFIG_BT_L2CAP
 int l2cap_init(void);
 void l2cap_exit(void);
-#else
-static inline int l2cap_init(void)
-{
-	return 0;
-}
 
-static inline void l2cap_exit(void)
-{
-}
-#endif
-
-#ifdef CONFIG_BT_SCO
 int sco_init(void);
 void sco_exit(void);
-#else
-static inline int sco_init(void)
-{
-	return 0;
-}
-
-static inline void sco_exit(void)
-{
-}
-#endif
 
 #endif /* __BLUETOOTH_H */

net/bluetooth/Kconfig

···
 	tristate "Bluetooth subsystem support"
 	depends on NET && !S390
 	depends on RFKILL || !RFKILL
+	select CRC16
 	select CRYPTO
+	select CRYPTO_BLKCIPHER
+	select CRYPTO_AES
+	select CRYPTO_ECB
 	help
 	  Bluetooth is low-cost, low-power, short-range wireless technology.
 	  It was designed as a replacement for cables and other short-range
···
 	  Bluetooth can be found at <http://www.bluetooth.com/>.
 
 	  Linux Bluetooth subsystem consist of several layers:
-	     Bluetooth Core (HCI device and connection manager, scheduler)
+	     Bluetooth Core
+		HCI device and connection manager, scheduler
+		SCO audio links
+		L2CAP (Logical Link Control and Adaptation Protocol)
+		SMP (Security Manager Protocol) on LE (Low Energy) links
 	     HCI Device drivers (Interface to the hardware)
-	     SCO Module (SCO audio links)
-	     L2CAP Module (Logical Link Control and Adaptation Protocol)
 	     RFCOMM Module (RFCOMM Protocol)  
 	     BNEP Module (Bluetooth Network Encapsulation Protocol)
 	     CMTP Module (CAPI Message Transport Protocol)
···
 	  utilities like hciconfig and bluetoothd.  These utilities and updates
 	  to Bluetooth kernel modules are provided in the BlueZ packages.  For
 	  more information, see <http://www.bluez.org/>.
-
-if BT != n
-
-config BT_L2CAP
-	bool "L2CAP protocol support"
-	select CRC16
-	select CRYPTO
-	select CRYPTO_BLKCIPHER
-	select CRYPTO_AES
-	select CRYPTO_ECB
-	help
-	  L2CAP (Logical Link Control and Adaptation Protocol) provides
-	  connection oriented and connection-less data transport.  L2CAP
-	  support is required for most Bluetooth applications.
-
-	  Also included is support for SMP (Security Manager Protocol) which
-	  is the security layer on top of LE (Low Energy) links.
-
-config BT_SCO
-	bool "SCO links support"
-	help
-	  SCO link provides voice transport over Bluetooth.  SCO support is
-	  required for voice applications like Headset and Audio.
-
-endif
 
 source "net/bluetooth/rfcomm/Kconfig"
 

net/bluetooth/Makefile

···
 obj-$(CONFIG_BT_CMTP)	+= cmtp/
 obj-$(CONFIG_BT_HIDP)	+= hidp/
 
-bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o hci_sock.o hci_sysfs.o lib.o
-bluetooth-$(CONFIG_BT_L2CAP)	+= l2cap_core.o l2cap_sock.o smp.o
-bluetooth-$(CONFIG_BT_SCO)	+= sco.o
+bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o \
+	hci_sock.o hci_sysfs.o l2cap_core.o l2cap_sock.o smp.o sco.o lib.o

net/bluetooth/bnep/Kconfig

···
 config BT_BNEP
 	tristate "BNEP protocol support"
-	depends on BT && BT_L2CAP
+	depends on BT
 	select CRC32
 	help
 	  BNEP (Bluetooth Network Encapsulation Protocol) is Ethernet

net/bluetooth/cmtp/Kconfig

···
 config BT_CMTP
 	tristate "CMTP protocol support"
-	depends on BT && BT_L2CAP && ISDN_CAPI
+	depends on BT && ISDN_CAPI
 	help
 	  CMTP (CAPI Message Transport Protocol) is a transport layer
 	  for CAPI messages.  CMTP is required for the Bluetooth Common

net/bluetooth/hidp/Kconfig

···
 config BT_HIDP
 	tristate "HIDP protocol support"
-	depends on BT && BT_L2CAP && INPUT && HID_SUPPORT
+	depends on BT && INPUT && HID_SUPPORT
 	select HID
 	help
 	  HIDP (Human Interface Device Protocol) is a transport layer

net/bluetooth/rfcomm/Kconfig

···
 config BT_RFCOMM
 	tristate "RFCOMM protocol support"
-	depends on BT && BT_L2CAP
+	depends on BT
 	help
 	  RFCOMM provides connection oriented stream transport.  RFCOMM
 	  support is required for Dialup Networking, OBEX and other Bluetooth