If i915 does not support given platform but the hardware i.e.: HDAudio
codec is still there, the codec-probing procedure will succeed for such
device but the follow up initialization will always end up with -ENODEV.
While bus could filter out address '2' which Intel's HDMI/DP codecs
always enumerate on, more robust approach is to check for i915 presence
before registering display codecs.
Signed-off-by: Cezary Rojewski <cezary.rojewski@xxxxxxxxx>
---
sound/soc/codecs/hda.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/sound/soc/codecs/hda.c b/sound/soc/codecs/hda.c
index d2117e36ddd1..7c6bedeceaa2 100644
--- a/sound/soc/codecs/hda.c
+++ b/sound/soc/codecs/hda.c
@@ -350,6 +350,11 @@ static int hda_hdev_attach(struct hdac_device *hdev)
struct hda_codec *codec = dev_to_hda_codec(&hdev->dev);
struct snd_soc_component_driver *comp_drv;
+ if (hda_codec_is_display(codec) && !hdev->bus->audio_component) {
+ dev_dbg(&hdev->dev, "no i915, skip registration for 0x%08x\n", hdev->vendor_id);
+ return -ENODEV;
+ }
+
comp_drv = devm_kzalloc(&hdev->dev, sizeof(*comp_drv), GFP_KERNEL);
if (!comp_drv)
return -ENOMEM;
--
2.25.1
