Bugzilla Bug 118490

The modules won't load. The snd module complains:
snd: Unknown symbol pm_register
snd: Unknown symbol pm_unregister

All the other modules complain about unknown symbols, because snd has not been
loaded. The compilation process of alsa-driver also outputs warnings about
this, but does not fail.

Writing this report, this is what i discovered:

commit bca73e4bf8563d83f7856164caa44d5f42e44cca
Author: Jeff Garzik <jgarzik@pobox.com>
Date:   Sun Nov 13 16:06:25 2005 -0800

    [PATCH] move pm_register/etc. to CONFIG_PM_LEGACY, pm_legacy.h

    Since few people need the support anymore, this moves the legacy
    pm_xxx functions to CONFIG_PM_LEGACY, and include/linux/pm_legacy.h.

    Signed-off-by: Andrew Morton <akpm@osdl.org>
    Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Indeed, i disabled CONFIG_PM_LEGACY, because i really didn't expect anything to
depend on it. Anyway, i would have expected this:

 * Checking for suitable kernel configuration options:

To at least issue a warning. I hope this is relevant.

I have no experience with those checks, if kernel team can suggest something,
it would really rocks :)

Okay check added, hopefully it will work.