1SND_PCM_LIB_MALLOC_P(9) PCM API SND_PCM_LIB_MALLOC_P(9)
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6 snd_pcm_lib_malloc_pages - allocate the DMA buffer
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9 int snd_pcm_lib_malloc_pages(struct snd_pcm_substream * substream,
10 size_t size);
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13 substream
14 the substream to allocate the DMA buffer to
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16 size
17 the requested buffer size in bytes
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20 Allocates the DMA buffer on the BUS type given earlier to
21 snd_pcm_lib_preallocate_xxx_pages.
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23 Returns 1 if the buffer is changed, 0 if not changed, or a negative
24 code on failure.
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27Kernel Hackers Manual 2.6. November 2011 SND_PCM_LIB_MALLOC_P(9)