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41 lines
1.6 KiB
Diff
41 lines
1.6 KiB
Diff
From 68f84e0cd59292aced930b97274c7213cbaae798 Mon Sep 17 00:00:00 2001
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From: Dom Cobley <popcornmix@gmail.com>
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Date: Tue, 6 Dec 2022 15:05:56 +0000
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Subject: [PATCH] vc4_hdmi: Avoid log spam for audio start failure
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We regularly get dmesg error reports of:
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[ 18.184066] hdmi-audio-codec hdmi-audio-codec.3.auto: ASoC: error at snd_soc_dai_startup on i2s-hifi: -19
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[ 18.184098] MAI: soc_pcm_open() failed (-19)
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Currently I get 30 of these when booting to desktop.
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We always say, ignore they are harmless, but removing them would be good.
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A bit of investigation shows, for me, the errors are all generated by second, unused hdmi interface.
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It shows as an alsa device, and pulseaudio attempts to open it (numerous times), generating a kernel
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error message each time.
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systemctl --user restart pulseaudio.service generates 6 additional error messages.
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The error messages all come through:
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https://github.com/raspberrypi/linux/blob/a009a9c0d79dfec114ee5102ec3d3325a172c952/sound/soc/soc-pcm.c#L39
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which suggests returning ENOTSUPP, rather that ENODEV will be quiet. And indeed it is.
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Note: earlier kernels do not have the quiet ENOTSUPP, so additional cherry-picks will be needed to backport
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Signed-off-by: Dom Cobley <popcornmix@gmail.com>
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---
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drivers/gpu/drm/vc4/vc4_hdmi.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
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@@ -2368,7 +2368,7 @@ static int vc4_hdmi_audio_startup(struct
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}
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if (!vc4_hdmi_audio_can_stream(vc4_hdmi)) {
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- ret = -ENODEV;
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+ ret = -ENOTSUPP;
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goto out_dev_exit;
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}
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