diff options
| -rw-r--r-- | sound/core/pcm_native.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index 71323d807dbf..dc9fa312fadd 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -243,13 +243,18 @@ int snd_pcm_info_user(struct snd_pcm_substream *substream, static bool hw_support_mmap(struct snd_pcm_substream *substream) { + struct snd_dma_buffer *dmabuf; + if (!(substream->runtime->hw.info & SNDRV_PCM_INFO_MMAP)) return false; if (substream->ops->mmap || substream->ops->page) return true; - switch (substream->dma_buffer.dev.type) { + dmabuf = snd_pcm_get_dma_buf(substream); + if (!dmabuf) + dmabuf = &substream->dma_buffer; + switch (dmabuf->dev.type) { case SNDRV_DMA_TYPE_UNKNOWN: /* we can't know the device, so just assume that the driver does * everything right @@ -259,7 +264,7 @@ static bool hw_support_mmap(struct snd_pcm_substream *substream) case SNDRV_DMA_TYPE_VMALLOC: return true; default: - return dma_can_mmap(substream->dma_buffer.dev.dev); + return dma_can_mmap(dmabuf->dev.dev); } } |