add at24 driver

hc

2023-11-06 15ade055295d13f95d49e3d99b09f3bbfb4a43e7

 kernel/sound/core/pcm_dmaengine.c
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@@ -27,6 +27,7 @@
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 #include <sound/soc.h>
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 #include <sound/dmaengine_pcm.h>
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+#include "pcm_local.h"
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 struct dmaengine_pcm_runtime_data {
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 	struct dma_chan *dma_chan;
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@@ -140,11 +141,20 @@
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 static void dmaengine_pcm_dma_complete(void *arg)
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 {
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 	struct snd_pcm_substream *substream = arg;
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-	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
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+	struct dmaengine_pcm_runtime_data *prtd;
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+
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+	snd_pcm_stream_lock_irq(substream);
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+	if (PCM_RUNTIME_CHECK(substream)) {
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+		snd_pcm_stream_unlock_irq(substream);
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+		return;
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+	}
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+
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+	prtd = substream_to_prtd(substream);
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 	prtd->pos += snd_pcm_lib_period_bytes(substream);
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 	if (prtd->pos >= snd_pcm_lib_buffer_bytes(substream))
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 		prtd->pos = 0;
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+	snd_pcm_stream_unlock_irq(substream);
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 	snd_pcm_period_elapsed(substream);
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 }