other versions
SND_PCM_LIB_PREALLOC(9) | PCM API | SND_PCM_LIB_PREALLOC(9) |
NAME¶
snd_pcm_lib_preallocate_pages - pre-allocation for the given DMA type
SYNOPSIS¶
int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream * substream, int type, struct device * data, size_t size, size_t max);
ARGUMENTS¶
substream
the pcm substream instance
type
DMA type (SNDRV_DMA_TYPE_*)
data
DMA type dependent data
size
the requested pre-allocation size in bytes
max
the max. allowed pre-allocation size
DESCRIPTION¶
Do pre-allocation for the given DMA buffer type.
RETURN¶
Zero if successful, or a negative error code on failure.
COPYRIGHT¶
January 2017 | Kernel Hackers Manual 4.8. |