[root@liqiang driver]# make
make -C /home/student/linux-2.6.29 M=/home/student/driver/led/driver modules
make[1]: Entering directory `/home/student/linux-2.6.29'
CC [M] /home/student/driver/led/driver/led_drv.o
/home/student/driver/led/driver/led_drv.c: In function 'led_ioctl':
/home/student/driver/led/driver/led_drv.c:55: error: implicit declaration of function 'led_start'
/home/student/driver/led/driver/led_drv.c:60: error: implicit declaration of function 'led_stop'
/home/student/driver/led/driver/led_drv.c: At top level:
/home/student/driver/led/driver/led_drv.c:166: warning: conflicting types for 'led_stop'
/home/student/driver/led/driver/led_drv.c:60: warning: previous implicit declaration of 'led_stop' was here
/home/student/driver/led/driver/led_drv.c:180: warning: conflicting types for 'led_start'
/home/student/driver/led/driver/led_drv.c:55: warning: previous implicit declaration of 'led_start' was here
make[2]: *** [/home/student/driver/led/driver/led_drv.o] 错误 1
make[1]: *** [_module_/home/student/driver/led/driver] 错误 2
make[1]: Leaving directory `/home/student/linux-2.6.29'
make: *** [modules] 错误 2
[root@liqiang driver]# vim led_drv.c
我该怎么办？
