[ILUG] kernel programming curiosity

[Mark McLoughlin]

Have you tried this out? - if it works, what I'm about to say is
complete bull ;)

>   case 1:  __get_user_x(1,__ret_gu,__val_gu,ptr); break;    \

You're not passing an integer 1 here. You're passing a symbol(string)
called 1 which using #size is turned into this

   "call __put_user_" "1"

>   __get_user_x(sizeof (*(ptr)),__ret_gu,__val_gu,ptr); \

Here you're trying to do the same with a compiletime/runtime function
integer result. It's just not going to work the same way.

I don't have time to check this out - its just a hunch.

Good Luck,
Mark.