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Fix memory leaks with zephyr native drivers #6540

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Merged
kv2019i merged 3 commits into from
Nov 7, 2022
Merged

Fix memory leaks with zephyr native drivers #6540

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355aecc
lib: dma: free dma channels when ref count is 0
ranj063 Nov 6, 2022
df8318f
lib: dma: return NULL when DMA init fails
ranj063 Nov 6, 2022
2f225f8
dai-zephyr: Free DMA config block during reset
ranj063 Nov 6, 2022
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5 changes: 4 additions & 1 deletion src/lib/dma.c
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Original file line number Diff line number Diff line change
Expand Up @@ -128,7 +128,10 @@ void dma_put(struct dma *dma)
k_spinlock_key_t key;

key = k_spin_lock(&dma->lock);
--dma->sref;
if (--dma->sref == 0) {
rfree(dma->chan);
dma->chan = NULL;
}
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@kv2019i kv2019i Nov 7, 2022

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Without this, we lose one "dma->chan = rzalloc(SOF_MEM_ZONE_RUNTIME_SHARED" worth of memory whenever sref goes to 1->0 and back.


tr_info(&dma_tr, "dma_put(), dma = %p, sref = %d",
dma, dma->sref);
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