ALSA: Make CONFIG_SND_OSSEMUL user-selectable

Currently CONFIG_SND_OSSEMUL is selected by each config like
CONFIG_SND_PCM_OSS.  But, as see in the raw MIDI code that is built
conditionally with CONFIG_SND_OSSEMUL, we should rather make
CONFIG_SND_OSSEMUL user-selectable as the top kconfig item, and leave
the rest depending on it.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 9749f9e..3a9afc5 100644 (file)
--- a/sound/core/Kconfig
+++ b/sound/core/Kconfig
@@ -59,12 +59,14 @@ config SND_SEQ_DUMMY
          will be called snd-seq-dummy.
 
 config SND_OSSEMUL
+       bool "Enable OSS Emulation"
        select SOUND_OSS_CORE
-       bool
+       help
+         This option enables the build of OSS emulation layer.
 
 config SND_MIXER_OSS
        tristate "OSS Mixer API"
-       select SND_OSSEMUL
+       depends on SND_OSSEMUL
        help
          To enable OSS mixer API emulation (/dev/mixer*), say Y here
          and read <file:Documentation/sound/alsa/OSS-Emulation.txt>.
@@ -76,7 +78,7 @@ config SND_MIXER_OSS
 
 config SND_PCM_OSS
        tristate "OSS PCM (digital audio) API"
-       select SND_OSSEMUL
+       depends on SND_OSSEMUL
        select SND_PCM
        help
          To enable OSS digital audio (PCM) emulation (/dev/dsp*), say Y
@@ -110,7 +112,7 @@ config SND_PCM_TIMER
 config SND_SEQUENCER_OSS
        bool "OSS Sequencer API"
        depends on SND_SEQUENCER
-       select SND_OSSEMUL
+       depends on SND_OSSEMUL
        help
          Say Y here to enable OSS sequencer emulation (both
          /dev/sequencer and /dev/music interfaces).