[alsa-devel] [PATCH 2/8] ALSA: memalloc: Simplify snd_malloc_dev_pages() calls
Takashi Iwai
tiwai at suse.de
Mon Aug 27 10:59:47 CEST 2018
snd_malloc_dev_pages() and snd_free_dev_pages() are local functions
and the parameters passed there are all contained in snd_dma_buffer
object. As a code-simplification, pass snd_dma_buffer object and
assign the address there like other allocators do (except for
snd_malloc_pages() which is called from outside, hence we can't change
easily).
Only code refactoring, no functional changes.
Signed-off-by: Takashi Iwai <tiwai at suse.de>
---
sound/core/memalloc.c | 18 +++++++-----------
1 file changed, 7 insertions(+), 11 deletions(-)
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c
index d85df01bf055..cc051bfe2f6f 100644
--- a/sound/core/memalloc.c
+++ b/sound/core/memalloc.c
@@ -82,26 +82,22 @@ EXPORT_SYMBOL(snd_free_pages);
#ifdef CONFIG_HAS_DMA
/* allocate the coherent DMA pages */
-static void *snd_malloc_dev_pages(struct device *dev, size_t size, dma_addr_t *dma)
+static void snd_malloc_dev_pages(struct snd_dma_buffer *dmab, size_t size)
{
gfp_t gfp_flags;
- if (WARN_ON(!dma))
- return NULL;
gfp_flags = GFP_KERNEL
| __GFP_COMP /* compound page lets parts be mapped */
| __GFP_NORETRY /* don't trigger OOM-killer */
| __GFP_NOWARN; /* no stack trace print - this call is non-critical */
- return dma_alloc_coherent(dev, size, dma, gfp_flags);
+ dmab->area = dma_alloc_coherent(dmab->dev.dev, size, &dmab->addr,
+ gfp_flags);
}
/* free the coherent DMA pages */
-static void snd_free_dev_pages(struct device *dev, size_t size, void *ptr,
- dma_addr_t dma)
+static void snd_free_dev_pages(struct snd_dma_buffer *dmab)
{
- if (ptr == NULL)
- return;
- dma_free_coherent(dev, size, ptr, dma);
+ dma_free_coherent(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
}
#ifdef CONFIG_GENERIC_ALLOCATOR
@@ -195,7 +191,7 @@ int snd_dma_alloc_pages(int type, struct device *device, size_t size,
dmab->dev.type = SNDRV_DMA_TYPE_DEV;
#endif /* CONFIG_GENERIC_ALLOCATOR */
case SNDRV_DMA_TYPE_DEV:
- dmab->area = snd_malloc_dev_pages(device, size, &dmab->addr);
+ snd_malloc_dev_pages(dmab, size);
break;
#endif
#ifdef CONFIG_SND_DMA_SGBUF
@@ -270,7 +266,7 @@ void snd_dma_free_pages(struct snd_dma_buffer *dmab)
break;
#endif /* CONFIG_GENERIC_ALLOCATOR */
case SNDRV_DMA_TYPE_DEV:
- snd_free_dev_pages(dmab->dev.dev, dmab->bytes, dmab->area, dmab->addr);
+ snd_free_dev_pages(dmab);
break;
#endif
#ifdef CONFIG_SND_DMA_SGBUF
--
2.18.0
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