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sound: make OSS sound core optional

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sound/sound_core.c implements soundcore.ko and contains two parts -
sound_class which is shared by both ALSA and OSS and device
redirection support for OSS.  It's always compiled when any sound
support is enabled although it's necessary only when OSS (the actual
one or emulation) is enabled.  This is slightly wasteful and as device
redirection always registers character device region for major 14, it
prevents alternative implementation.

This patch introduces a new config SOUND_OSS_CORE which is selected
iff OSS support is actually necessary and build the OSS core part
conditionally.

If OSS is disabled, soundcore merely contains sound_class but leaving
it that way seems to be the simplest approach as otherwise sound_class
should be in ALSA core file if OSS is disabled but should be in
soundcore if OSS is enabled.  Also, there's also the user confusion
factor.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Tejun Heo 2008-08-28 16:42:51 +02:00 • committed by Jaroslav Kysela
parent 9f99a6386e
commit d886e87cb8
5 changed files with 71 additions and 19 deletions
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1
sound/core/Kconfig
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@ -44,6 +44,7 @@ config SND_SEQ_DUMMY
will be called snd-seq-dummy.
config SND_OSSEMUL
select SOUND_OSS_CORE
bool
config SND_MIXER_OSS