编译scull的驱动程序

用arm-linux编译scull时，遇到的错误：

问题1：
root@ubuntu:~/Desktop/scull01# make ARCH=arm CROSS_COMPILE=arm-linux- -C/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x M=`pwd` modules
make: Entering directory `/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x'
  CC [M]  /root/Desktop/scull01/main.o
/root/Desktop/scull01/main.c:17:26: linux/config.h: No such file or directory
make[1]: *** [/root/Desktop/scull01/main.o] Error 1
make: *** [_module_/root/Desktop/scull01] Error 2
make: Leaving directory `/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x'
解决办法：
直接删除config.h
参考：http://linux.chinaunix.net/bbs/archiver/tid-1025989.html

问题2：
root@ubuntu:~/Desktop/scull01# make ARCH=arm CROSS_COMPILE=arm-linux- -C/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x M=`pwd` modules
make: Entering directory `/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x'
  CC [M]  /root/Desktop/scull01/main.o
  CC [M]  /root/Desktop/scull01/pipe.o
  CC [M]  /root/Desktop/scull01/access.o
/root/Desktop/scull01/access.c: In function `scull_u_open':
/root/Desktop/scull01/access.c:106: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c:107: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c:114: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c: In function `scull_w_available':
/root/Desktop/scull01/access.c:165: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c:166: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c: In function `scull_w_open':
/root/Desktop/scull01/access.c:179: error: `TASK_INTERRUPTIBLE' undeclared (first use in this function)
/root/Desktop/scull01/access.c:179: error: (Each undeclared identifier is reported only once
/root/Desktop/scull01/access.c:179: error: for each function it appears in.)
/root/Desktop/scull01/access.c:179: error: implicit declaration of function `signal_pending'
/root/Desktop/scull01/access.c:179: error: implicit declaration of function `schedule'
/root/Desktop/scull01/access.c:184: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c: In function `scull_w_release':
/root/Desktop/scull01/access.c:205: error: `TASK_INTERRUPTIBLE' undeclared (first use in this function)
/root/Desktop/scull01/access.c: In function `scull_c_open':
/root/Desktop/scull01/access.c:277: error: dereferencing pointer to incomplete type
/root/Desktop/scull01/access.c:281: error: dereferencing pointer to incomplete type
make[1]: *** [/root/Desktop/scull01/access.o] Error 1
make: *** [_module_/root/Desktop/scull01] Error 2
make: Leaving directory `/root/Desktop/uclinux02/uClinux-dist/linux-2.6.x'
解决办法：
access.c里面增加 #include
参考：http://linux.chinaunix.net/bbs/archiver/tid-1025989.html