diff options
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/pcm_memory.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/core/pcm_memory.c b/sound/core/pcm_memory.c index 860935e3aea4..8326d16d3596 100644 --- a/sound/core/pcm_memory.c +++ b/sound/core/pcm_memory.c @@ -11,6 +11,7 @@ #include <linux/moduleparam.h> #include <linux/vmalloc.h> #include <linux/export.h> +#include <linux/dma-mapping.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/info.h> @@ -39,6 +40,18 @@ static int do_alloc_pages(struct snd_card *card, int type, struct device *dev, if (max_alloc_per_card && card->total_pcm_alloc_bytes + size > max_alloc_per_card) return -ENOMEM; + + if (IS_ENABLED(CONFIG_SND_DMA_SGBUF) && + (type == SNDRV_DMA_TYPE_DEV_SG || type == SNDRV_DMA_TYPE_DEV_UC_SG) && + !dma_is_direct(get_dma_ops(dev))) { + /* mutate to continuous page allocation */ + dev_dbg(dev, "Use continuous page allocator\n"); + if (type == SNDRV_DMA_TYPE_DEV_SG) + type = SNDRV_DMA_TYPE_DEV; + else + type = SNDRV_DMA_TYPE_DEV_UC; + } + err = snd_dma_alloc_pages(type, dev, size, dmab); if (!err) { mutex_lock(&card->memory_mutex); |