snd_pcm_lib_free_pages (9) Linux Manual Page
snd_pcm_lib_free_pages – release the allocated DMA buffer.
Synopsis
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);Arguments
substream
-
- the substream to release the DMA buffer
Description
Releases the DMA buffer allocated via snd_pcm_lib_malloc_pages.
Return
Zero if successful, or a negative error code on failure.