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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/sound/soc/rockchip/rockchip_multi_dais.c
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@@ -80,9 +80,19 @@
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 {
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 	struct rk_mdais_dev *mdais = to_info(dai);
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 	struct snd_soc_dai *child;
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+	unsigned int *channel_maps;
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 	int ret = 0, i = 0;
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+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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+		channel_maps = mdais->playback_channel_maps;
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+	else
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+		channel_maps = mdais->capture_channel_maps;
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+
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 	for (i = 0; i < mdais->num_dais; i++) {
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+		/* skip DAIs which have no channel mapping */
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+		if (!channel_maps[i])
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+			continue;
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+
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 		child = mdais->dais[i].dai;
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 		if (child->driver->ops && child->driver->ops->trigger) {
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 			ret = child->driver->ops->trigger(substream,
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@@ -258,7 +268,7 @@
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 	dai_component.of_node = np;
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-	return snd_soc_find_dai(&dai_component);
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+	return snd_soc_find_dai_with_mutex(&dai_component);
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 }
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 static int mdais_runtime_suspend(struct device *dev)