From: Dave Airlie <airlied@xxxxxxxxxx>
This breaks MST audio, as it appears the hw doesn't
operate like the code believes.
What seems to happen if we have 3 pins, 5, 6, 7
and 6 is connected to 3 devices and 5/7 are connected
to 0 devices, then devices 5/7 act always as if they
are equivalent to pin 6 device 0.
So I connected pin 6 device 0 to channel 1, then
this code goes and connects pin 5/7 to channel 0
but this actually reprograms pin 6 device 0 to channel
0 at the same time and breaks audio.
Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
---
sound/pci/hda/patch_hdmi.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 8272656..7a4aeac 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1411,6 +1411,7 @@ static void intel_not_share_assigned_cvt(struct hda_codec *codec,
int cvt_idx, curr;
struct hdmi_spec_per_cvt *per_cvt;
+ return;
/* configure all pins, including "no physical connection" ones */
for_each_hda_codec_node(nid, codec) {
unsigned int wid_caps = get_wcaps(codec, nid);
--
2.4.1
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