snd_pcm_lib_malloc_p(9)
NAME
snd_pcm_lib_malloc_pages - allocate the DMA buffer
SYNOPSIS
int snd_pcm_lib_malloc_pages(struct snd_pcm_substream * substream,
size_t size);
ARGUMENTS
- substream
- the substream to allocate the DMA buffer to
- size
- the requested buffer size in bytes
DESCRIPTION
Allocates the DMA buffer on the BUS type given earlier to
snd_pcm_lib_preallocate_xxx_pages.
Returns 1 if the buffer is changed, 0 if not changed, or a negative
code on failure.