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ASoC: mediatek: Assign dummy when codec not specified for a DAI link

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[ Upstream commit 5f39231888c63f0a7708abc86b51b847476379d8 ]

MediaTek sound card drivers are checking whether a DAI link is present
and used on a board to assign the correct parameters and this is done
by checking the codec DAI names at probe time.

If no real codec is present, assign the dummy codec to the DAI link
to avoid NULL pointer during string comparison.

Fixes: 4302187d955f ("ASoC: mediatek: common: add soundcard driver common code")
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://msgid.link/r/20240313110147.1267793-5-angelogioacchino.delregno@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
AngeloGioacchino Del Regno 2024-03-13 12:01:29 +01:00 committed by Greg Kroah-Hartman
parent 9ceb5bd746
commit 87b8dca6e0
1 changed files with 5 additions and 1 deletions
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6
sound/soc/mediatek/common/mtk-soundcard-driver.c
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@ -22,7 +22,11 @@ static int set_card_codec_info(struct snd_soc_card *card,
codec_node = of_get_child_by_name(sub_node, "codec");
if (!codec_node) {
dev_dbg(dev, "%s no specified codec\n", dai_link->name);
dev_dbg(dev, "%s no specified codec: setting dummy.\n", dai_link->name);
dai_link->codecs = &snd_soc_dummy_dlc;
dai_link->num_codecs = 1;
dai_link->dynamic = 1;
return 0;
}