2.6.10-mm1: ALSA ac97 compile error with CONFIG_PM=n

[Adrian Bunk]

On Mon, Jan 03, 2005 at 05:07:08PM -0600, Mark_H_Johnson@xxxxxxxxxxxx wrote:
> I was looking to compare RT latency between this kernel and the latest from
> Ingo and I had the following warnings / errors building 2.6.10-mm1:
> 
> [no apparent compile / link errors]
> *** Warning: "snd_ac97_restore_iec958" [sound/pci/ac97/snd-ac97-codec.ko]
> undefined!
> *** Warning: "snd_ac97_restore_status" [sound/pci/ac97/snd-ac97-codec.ko]
> undefined!
>...
> To fix this, should I just add the EXPORT_SYMBOL lines for these symbols
>   snd_ac97_restore_status  snd_ac97_restore_iec958
> or is something more needed?

That's not the problem, since function and definition are in the same 
module.

You didn't send your .config, but looking at the code it seems 
CONFIG_PM=n was the culprit.

As a workaround, it should work after enabling the following option:
  Power management options (ACPI, APM)
    Power Management support

This is only a workaround, I've Cc'ed the ALSA maintainers for a real 
fix.

> Thanks.
>   --Mark Johnson <mailto:Mark_H_Johnson@xxxxxxxxxxxx>

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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