Mark Heaphone {Center|LFE} control of emu10k1 conf as optional

The controls referred in center_lfe definition in EMU10K1.conf should be
marked as optional since some boards don't have these.

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

diff --git a/src/conf/cards/EMU10K1.conf b/src/conf/cards/EMU10K1.conf
index 7a7ebf54c139e74519bf39cf130b3773a6f21cad..956e1636c35b9f5aa872668536ab96ca786b84d0 100644 (file)
--- a/src/conf/cards/EMU10K1.conf
+++ b/src/conf/cards/EMU10K1.conf
@@ -108,6 +108,7 @@ EMU10K1.pcm.center_lfe.0 {
                                index 1
                                preserve true
                                # lock true
+                               optional true
                                value true
                        }
                        {
@@ -115,6 +116,7 @@ EMU10K1.pcm.center_lfe.0 {
                                index 1
                                preserve true
                                # lock true
+                               optional true
                                value true
                        }
 # if you have a creative's digital receiver, you can get surround/center/lfe