value of returning positive error code from module_init()?

[Robert P. J. Day]

  whoops, i forgot to ask this as well.  accidentally, i returned a
positive value from a module_init() routine, which loaded the module
and generated in /var/log/messages:

...
Jul  4 12:34:43 localhost kernel: hi module being loaded.
Jul  4 12:34:43 localhost kernel: sys_init_module: 'hi'->init
suspiciously returned 42, it should follow 0/-E convention
Jul  4 12:34:43 localhost kernel: sys_init_module: loading module
anyway...
Jul  4 12:34:43 localhost kernel: Pid: 3881, comm: insmod Tainted: G
M       2.6.29.5-191.fc11.x86_64 #1
Jul  4 12:34:43 localhost kernel: Call Trace:
Jul  4 12:34:43 localhost kernel: [<ffffffff8106f33b>]
sys_init_module+0x13e/0x1cd
Jul  4 12:34:43 localhost kernel: [<ffffffff8101133a>]
system_call_fastpath+0x16
...

  i'd never seen that before, i guess because i never returned a
positive error code.  is there a tradition for returning positive
values?  for what purpose?  thanks.

rday
--

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

        Linux Consulting, Training and Annoying Kernel Pedantry.

Web page:                                          http://crashcourse.ca
Linked In:                             http://www.linkedin.com/in/rpjday
Twitter:                                       http://twitter.com/rpjday
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