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-rw-r--r--Documentation/sound/cards/index.rst1
-rw-r--r--Documentation/sound/cards/via82xx-mixer.rst8
2 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/sound/cards/index.rst b/Documentation/sound/cards/index.rst
index 251f1d7675f7..4fcb88049ccc 100644
--- a/Documentation/sound/cards/index.rst
+++ b/Documentation/sound/cards/index.rst
@@ -9,3 +9,4 @@ Card-Specific Information
sb-live-mixer
audigy-mixer
emu10k1-jack
+ via82xx-mixer
diff --git a/Documentation/sound/cards/via82xx-mixer.rst b/Documentation/sound/cards/via82xx-mixer.rst
new file mode 100644
index 000000000000..6ee993d4535b
--- /dev/null
+++ b/Documentation/sound/cards/via82xx-mixer.rst
@@ -0,0 +1,8 @@
+=============
+VIA82xx mixer
+=============
+
+On many VIA82xx boards, the ``Input Source Select`` mixer control does not work.
+Setting it to ``Input2`` on such boards will cause recording to hang, or fail
+with EIO (input/output error) via OSS emulation. This control should be left
+at ``Input1`` for such cards.