Can't you put it in rc.conf in modules part? I did it on arch, worked fine.
No, because he's not using Arch.
To the OP:
You want to add tp_smapi to your modules list (/etc/modules on Debian derivatives)
You also will want to pay closer attention to what you're supposed to put into config files, since I'm pretty sure that the commands weren't supposed to go into /etc/sysfs.conf themselves.
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