ALSA: pcm - Call pgprot_noncached() for vmalloc'ed buffers
pgprot_noncached() can be set for vmalloc'ed buffers safely, and we'd need non-cached behavior more or less, even for the intermediate ring- buffers. Now snd_pcm_lib_mmap_vmalloc() is added as the common PCM mmap callback that is coupled with snd_pcm_lib_alloc_vmalloc_buffer() & co. Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -1021,6 +1021,10 @@ int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_s
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#define snd_pcm_lib_mmap_iomem NULL
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#endif
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int snd_pcm_lib_mmap_noncached(struct snd_pcm_substream *substream,
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struct vm_area_struct *area);
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#define snd_pcm_lib_mmap_vmalloc snd_pcm_lib_mmap_noncached
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static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max)
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{
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*max = dma < 4 ? 64 * 1024 : 128 * 1024;
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