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>

1 files changed, 6 insertions, 4 deletions

diff --git a/sound/core/Kconfig b/sound/core/Kconfig
index 9749f9e8b45c..3a9afc520d4e 100644
--- 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).