scullLab.txt

1. mark the CFLAGS in makefile
EXTRA_CFLAGS += $(DEBFLAGS)
EXTRA_CFLAGS += -I$(LDDINC)

2. add include in pipe.c, access.c
#include <linux/sched.h>

3. in Directory /usr/src/$(shell uname -r)
ln -s autoconf.h config.h

4. in access.c
replace current->uid with current->cred->uid
replace current->euid with current->cred->euid

5. chmod 744 scull_load

6. in file scull_load, line 5
replace mode="664" with mode="666"

7. chmod 744 scull_unload

8. sudo ./scull_load

9. ls /dev/sc*

10. sudo ./scull_unload

ref:http://blog.csdn.net/lxmky/archive/2010/06/17/5675706.aspx

11. in jit.c
#include <linux/sched.h>

12. remove jiq.o in Makefile

13. in kdatasize.c and kdatalign.c
error:        system_utsname undeclared 
-               system_utsname.machine,
+               init_uts_ns.name.machine,

cat /proc/devices
sudo mknod /dev/sleepy c 251 0

14. setlevel.c, inp.c, outp.c

15. Replace # include <asm/io.h> by # include <sys/io.h>
or in /usr/include/asm
sudo ln -s ../sys/io.h io.h