On Tue, Feb 19, 2008 at 01:41:15PM +0200, Eugene Goubine wrote:
> Hello , dear list users.
> >From my module I am trying to register for the system suspend using the *
> register_pm_notifier(nb)*
> which is expanded to *blocking_notifier_chain_register(&pm_chain_head, nb).*
> **
> I have a linker warning which tells "pm_chain_head" is undefined. I do
> see pm_chain_head in my /proc/kallsyms.
> What do I miss? Thank you.
It's hard to comment on it if you don't attach the source code...
At a guess, you tried using register_pm_notifier, that failed to link,
so you tried to use the function that it calls, which won't work since
pm_chain_head is static to the kernel/power/main.c compilation unit.
License your module under the GPL and add MODULE_LICENSE("GPL") and
you'll be able to use the register_pm_notifier export...
regards, Kyle
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