diff options
Diffstat (limited to 'sound/core/pcm_dmaengine.c')
| -rw-r--r-- | sound/core/pcm_dmaengine.c | 40 |
1 files changed, 20 insertions, 20 deletions
diff --git a/sound/core/pcm_dmaengine.c b/sound/core/pcm_dmaengine.c index cc5db93b9132..b134a51b3fd5 100644 --- a/sound/core/pcm_dmaengine.c +++ b/sound/core/pcm_dmaengine.c @@ -352,20 +352,19 @@ EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_open_request_chan); int snd_dmaengine_pcm_sync_stop(struct snd_pcm_substream *substream) { struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); + struct dma_tx_state state; + enum dma_status status; - dmaengine_synchronize(prtd->dma_chan); + status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state); + if (status != DMA_PAUSED) + dmaengine_synchronize(prtd->dma_chan); return 0; } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_sync_stop); -/** - * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream - * @substream: PCM substream - * - * Return: 0 on success, a negative error code otherwise - */ -int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) +static void __snd_dmaengine_pcm_close(struct snd_pcm_substream *substream, + bool release_channel) { struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); struct dma_tx_state state; @@ -376,8 +375,20 @@ int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) dmaengine_terminate_async(prtd->dma_chan); dmaengine_synchronize(prtd->dma_chan); + if (release_channel) + dma_release_channel(prtd->dma_chan); kfree(prtd); +} +/** + * snd_dmaengine_pcm_close - Close a dmaengine based PCM substream + * @substream: PCM substream + * + * Return: 0 on success, a negative error code otherwise + */ +int snd_dmaengine_pcm_close(struct snd_pcm_substream *substream) +{ + __snd_dmaengine_pcm_close(substream, false); return 0; } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close); @@ -393,18 +404,7 @@ EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close); */ int snd_dmaengine_pcm_close_release_chan(struct snd_pcm_substream *substream) { - struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream); - struct dma_tx_state state; - enum dma_status status; - - status = dmaengine_tx_status(prtd->dma_chan, prtd->cookie, &state); - if (status == DMA_PAUSED) - dmaengine_terminate_async(prtd->dma_chan); - - dmaengine_synchronize(prtd->dma_chan); - dma_release_channel(prtd->dma_chan); - kfree(prtd); - + __snd_dmaengine_pcm_close(substream, true); return 0; } EXPORT_SYMBOL_GPL(snd_dmaengine_pcm_close_release_chan); |