snd_pcm_lib_malloc_pages (9) - Linux Man Pages

snd_pcm_lib_malloc_pages: allocate the DMA buffer

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.

RETURN

1 if the buffer is changed, 0 if not changed, or a negative code on failure.

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