From ff7a3267368634e368ebaac68d5e3abf129edd1d Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 28 Nov 2008 15:17:06 +0100 Subject: ALSA: hda - Don't export symbols when built-in kernel 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 --- sound/pci/hda/hda_codec.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'sound/pci/hda/hda_codec.h') diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 586ea08b340b..6612d0f20bc6 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -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 */ -- cgit v1.2.3