diff options
Diffstat (limited to 'sound/core/pcm_native.c')
| -rw-r--r-- | sound/core/pcm_native.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sound/core/pcm_native.c b/sound/core/pcm_native.c index b44d205cc838..8a3384342e8d 100644 --- a/sound/core/pcm_native.c +++ b/sound/core/pcm_native.c @@ -3813,9 +3813,11 @@ static vm_fault_t snd_pcm_mmap_data_fault(struct vm_fault *vmf) return VM_FAULT_SIGBUS; if (substream->ops->page) page = substream->ops->page(substream, offset); - else if (!snd_pcm_get_dma_buf(substream)) + else if (!snd_pcm_get_dma_buf(substream)) { + if (WARN_ON_ONCE(!runtime->dma_area)) + return VM_FAULT_SIGBUS; page = virt_to_page(runtime->dma_area + offset); - else + } else page = snd_sgbuf_get_page(snd_pcm_get_dma_buf(substream), offset); if (!page) return VM_FAULT_SIGBUS; |