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
Kernel Hackers Manual 4.8.                 January 2017                   SND_PCM_LIB_PREALLOC(9)