reference:
1. http://blog.chinaunix.net/uid-25562724-id-2939849.html
2. http://www.2cto.com/os/201212/175275.html
I resetup my ubuntu14.04 ,which wasting my a lot of time!!
all the operates are in the three path: 1 . /usr/src 2. /usr/src/linux-source-3.13.0 3 . /home/sswei/sswei/linux_driver(hello.c and makefile)
hello.ko:
print: hello,word--sswei Goodbye,cruel world-sswei