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ALSA: hda - Don't export symbols when built-in kernel

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The global functions in hda_codec.c and other core parts are only
for HD-audio codec and controller drivers.  When the HD-audio driver
is built in kernel, all stuff have to be statically linked, thus
we don't need any exports.

This patch introduces a conditional macro to do export only
when needed.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai
2008-11-28 15:17:06 +01:00
parent 645f10c1ac
commit ff7a326736
3 changed files with 91 additions and 76 deletions
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sound/pci/hda/hda_beep.c
+2 -2
View File
@@ -128,7 +128,7 @@ int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
INIT_WORK(&beep->beep_work, &snd_hda_generate_beep);
return 0;
}
EXPORT_SYMBOL_GPL(snd_hda_attach_beep_device);
EXPORT_SYMBOL_HDA(snd_hda_attach_beep_device);
void snd_hda_detach_beep_device(struct hda_codec *codec)
{
@@ -141,4 +141,4 @@ void snd_hda_detach_beep_device(struct hda_codec *codec)
kfree(beep);
}
}
EXPORT_SYMBOL_GPL(snd_hda_detach_beep_device);
EXPORT_SYMBOL_HDA(snd_hda_detach_beep_device);
sound/pci/hda/hda_codec.c
+74 -74
View File
File diff suppressed because it is too large Load Diff
sound/pci/hda/hda_codec.h
+15
View File
@@ -905,4 +905,19 @@ static inline void snd_hda_power_down(struct hda_codec *codec) {}
#define snd_hda_codec_needs_resume(codec) 1
#endif
/*
* Codec modularization
*/
/* Export symbols only for communication with codec drivers;
* When built in kernel, all HD-audio drivers are supposed to be statically
* linked to the kernel. Thus, the symbols don't have to (or shouldn't) be
* exported unless it's built as a module.
*/
#ifdef MODULE
#define EXPORT_SYMBOL_HDA(sym) EXPORT_SYMBOL_GPL(sym)
#else
#define EXPORT_SYMBOL_HDA(sym)
#endif
#endif /* __SOUND_HDA_CODEC_H */