1. 根目录:
2. drivers
3. usb
4. serial
5. Makefile

#
# Makefile for the USB serial device drivers.
#

# Object file lists.

obj-$(CONFIG_USB_SERIAL)			+= usbserial.o

usbserial-y := usb-serial.o generic.o bus.o

usbserial-$(CONFIG_USB_SERIAL_CONSOLE)	+= console.o

obj-$(CONFIG_USB_SERIAL_AIRCABLE)		+= aircable.o
obj-$(CONFIG_USB_SERIAL_ARK3116)		+= ark3116.o
obj-$(CONFIG_USB_SERIAL_BELKIN)			+= belkin_sa.o
obj-$(CONFIG_USB_SERIAL_CH341)			+= ch341.o
obj-$(CONFIG_USB_SERIAL_CP210X)			+= cp210x.o
obj-$(CONFIG_USB_SERIAL_CYBERJACK)		+= cyberjack.o
obj-$(CONFIG_USB_SERIAL_CYPRESS_M8)		+= cypress_m8.o
obj-$(CONFIG_USB_SERIAL_DEBUG)			+= usb_debug.o
obj-$(CONFIG_USB_SERIAL_DIGI_ACCELEPORT)	+= digi_acceleport.o
obj-$(CONFIG_USB_SERIAL_EDGEPORT)		+= io_edgeport.o
obj-$(CONFIG_USB_SERIAL_EDGEPORT_TI)		+= io_ti.o
obj-$(CONFIG_USB_SERIAL_EMPEG)			+= empeg.o
obj-$(CONFIG_USB_SERIAL_F81232)			+= f81232.o
obj-$(CONFIG_USB_SERIAL_FTDI_SIO)		+= ftdi_sio.o
obj-$(CONFIG_USB_SERIAL_GARMIN)			+= garmin_gps.o
obj-$(CONFIG_USB_SERIAL_IPAQ)			+= ipaq.o
obj-$(CONFIG_USB_SERIAL_IPW)			+= ipw.o
obj-$(CONFIG_USB_SERIAL_IR)			+= ir-usb.o
obj-$(CONFIG_USB_SERIAL_IUU)			+= iuu_phoenix.o
obj-$(CONFIG_USB_SERIAL_KEYSPAN)		+= keyspan.o
obj-$(CONFIG_USB_SERIAL_KEYSPAN_PDA)		+= keyspan_pda.o
obj-$(CONFIG_USB_SERIAL_KLSI)			+= kl5kusb105.o
obj-$(CONFIG_USB_SERIAL_KOBIL_SCT)		+= kobil_sct.o
obj-$(CONFIG_USB_SERIAL_MCT_U232)		+= mct_u232.o
obj-$(CONFIG_USB_SERIAL_METRO)			+= metro-usb.o
obj-$(CONFIG_USB_SERIAL_MOS7720)		+= mos7720.o
obj-$(CONFIG_USB_SERIAL_MOS7840)		+= mos7840.o
obj-$(CONFIG_USB_SERIAL_MXUPORT)		+= mxuport.o
obj-$(CONFIG_USB_SERIAL_NAVMAN)			+= navman.o
obj-$(CONFIG_USB_SERIAL_OMNINET)		+= omninet.o
obj-$(CONFIG_USB_SERIAL_OPTICON)		+= opticon.o
obj-$(CONFIG_USB_SERIAL_OPTION)			+= option.o
obj-$(CONFIG_USB_SERIAL_OTI6858)		+= oti6858.o
obj-$(CONFIG_USB_SERIAL_PL2303)			+= pl2303.o
obj-$(CONFIG_USB_SERIAL_QCAUX)			+= qcaux.o
obj-$(CONFIG_USB_SERIAL_QUALCOMM)		+= qcserial.o
obj-$(CONFIG_USB_SERIAL_QT2)			+= quatech2.o
obj-$(CONFIG_USB_SERIAL_SAFE)			+= safe_serial.o
obj-$(CONFIG_USB_SERIAL_SIERRAWIRELESS)		+= sierra.o
obj-$(CONFIG_USB_SERIAL_SIMPLE)			+= usb-serial-simple.o
obj-$(CONFIG_USB_SERIAL_SPCP8X5)		+= spcp8x5.o
obj-$(CONFIG_USB_SERIAL_SSU100)			+= ssu100.o
obj-$(CONFIG_USB_SERIAL_SYMBOL)			+= symbolserial.o
obj-$(CONFIG_USB_SERIAL_WWAN)			+= usb_wwan.o
obj-$(CONFIG_USB_SERIAL_TI)			+= ti_usb_3410_5052.o
obj-$(CONFIG_USB_SERIAL_VISOR)			+= visor.o
obj-$(CONFIG_USB_SERIAL_WISHBONE)		+= wishbone-serial.o
obj-$(CONFIG_USB_SERIAL_WHITEHEAT)		+= whiteheat.o
obj-$(CONFIG_USB_SERIAL_XIRCOM)			+= keyspan_pda.o
obj-$(CONFIG_USB_SERIAL_XSENS_MT)		+= xsens_mt.o