drivers/built-in.o: In function `usb_port_switch_wq':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/composite.c:36: undefined reference to `usb_port_switch_request'
drivers/built-in.o: In function `composite_setup':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/composite.c:1609: undefined reference to `usb_port_switch_request'
drivers/built-in.o: In function `acm_port_disconnect':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_acm.c:175: undefined reference to `gsmd_disconnect'
drivers/built-in.o: In function `acm_port_connect':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_acm.c:149: undefined reference to `gsmd_connect'
drivers/built-in.o: In function `acm_port_setup':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_acm.c:120: undefined reference to `gsmd_setup'
drivers/built-in.o: In function `gport_disconnect':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:476: undefined reference to `gsmd_disconnect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:479: undefined reference to `ghsic_ctrl_disconnect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:480: undefined reference to `ghsic_data_disconnect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:483: undefined reference to `ghsuart_data_disconnect'
drivers/built-in.o: In function `gport_connect':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:427: undefined reference to `gsmd_connect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:430: undefined reference to `ghsic_ctrl_connect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:436: undefined reference to `ghsic_data_connect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:440: undefined reference to `ghsic_ctrl_disconnect'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:445: undefined reference to `ghsuart_data_connect'
drivers/built-in.o: In function `gser_ioctl':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:1377: undefined reference to `gsmd_write'
drivers/built-in.o: In function `gport_setup':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:367: undefined reference to `gsmd_setup'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:369: undefined reference to `ghsic_data_setup'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:382: undefined reference to `ghsic_ctrl_setup'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:387: undefined reference to `ghsuart_data_setup'
drivers/built-in.o: In function `gserial_init_port':
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:1156: undefined reference to `ghsic_ctrl_set_port_name'
/home/user/mer/android/droid/out/target/product/y6/obj/KERNEL_OBJ/../../../../../../kernel/huawei/msm8909/drivers/usb/gadget/f_serial.c:1157: undefined reference to `ghsic_data_set_port_name'
make[2]: *** [vmlinux] Error 1