diff options
| -rw-r--r-- | sound/core/memalloc.c | 35 |
1 files changed, 17 insertions, 18 deletions
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index f901504b5afc..428652fda926 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -492,40 +492,39 @@ static const struct snd_malloc_ops snd_dma_dev_ops = { */ /* x86-specific allocations */ #ifdef CONFIG_SND_DMA_SGBUF -static void *snd_dma_wc_alloc(struct snd_dma_buffer *dmab, size_t size) -{ - return do_alloc_pages(dmab->dev.dev, size, &dmab->addr, true); -} - -static void snd_dma_wc_free(struct snd_dma_buffer *dmab) -{ - do_free_pages(dmab->area, dmab->bytes, true); -} - -static int snd_dma_wc_mmap(struct snd_dma_buffer *dmab, - struct vm_area_struct *area) -{ - area->vm_page_prot = pgprot_writecombine(area->vm_page_prot); - return snd_dma_continuous_mmap(dmab, area); -} +#define x86_fallback(dmab) (!get_dma_ops(dmab->dev.dev)) #else +#define x86_fallback(dmab) false +#endif + static void *snd_dma_wc_alloc(struct snd_dma_buffer *dmab, size_t size) { + if (x86_fallback(dmab)) + return do_alloc_pages(dmab->dev.dev, size, &dmab->addr, true); return dma_alloc_wc(dmab->dev.dev, size, &dmab->addr, DEFAULT_GFP); } static void snd_dma_wc_free(struct snd_dma_buffer *dmab) { + if (x86_fallback(dmab)) { + do_free_pages(dmab->area, dmab->bytes, true); + return; + } dma_free_wc(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr); } static int snd_dma_wc_mmap(struct snd_dma_buffer *dmab, struct vm_area_struct *area) { +#ifdef CONFIG_SND_DMA_SGBUF + if (x86_fallback(dmab)) { + area->vm_page_prot = pgprot_writecombine(area->vm_page_prot); + return snd_dma_continuous_mmap(dmab, area); + } +#endif return dma_mmap_wc(dmab->dev.dev, area, dmab->area, dmab->addr, dmab->bytes); } -#endif /* CONFIG_SND_DMA_SGBUF */ static const struct snd_malloc_ops snd_dma_wc_ops = { .alloc = snd_dma_wc_alloc, @@ -548,7 +547,7 @@ static void *snd_dma_noncontig_alloc(struct snd_dma_buffer *dmab, size_t size) sgt = dma_alloc_noncontiguous(dmab->dev.dev, size, dmab->dev.dir, DEFAULT_GFP, 0); #ifdef CONFIG_SND_DMA_SGBUF - if (!sgt && !get_dma_ops(dmab->dev.dev)) + if (!sgt && x86_fallback(dmab)) return snd_dma_sg_fallback_alloc(dmab, size); #endif if (!sgt) |