This is a note to let you know that I've just added the patch titled
ASoC: mediatek: Assign dummy when codec not specified for a DAI link
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-mediatek-assign-dummy-when-codec-not-specified-.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit bc1be03ad8a2e3ceabbcc10d7f20f01410b991cf
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Date: Wed Mar 13 12:01:29 2024 +0100
ASoC: mediatek: Assign dummy when codec not specified for a DAI link
[ 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@xxxxxxxxxxxxx>
Link: https://msgid.link/r/20240313110147.1267793-5-angelogioacchino.delregno@xxxxxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/mediatek/common/mtk-soundcard-driver.c b/sound/soc/mediatek/common/mtk-soundcard-driver.c
index a58e1e3674dec..000a086a8cf44 100644
--- a/sound/soc/mediatek/common/mtk-soundcard-driver.c
+++ b/sound/soc/mediatek/common/mtk-soundcard-driver.c
@@ -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;
}
