diff options
| -rw-r--r-- | sound/core/memalloc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sound/core/memalloc.c b/sound/core/memalloc.c index ea9698cea2e3..ad4a76b47b92 100644 --- a/sound/core/memalloc.c +++ b/sound/core/memalloc.c @@ -183,8 +183,11 @@ EXPORT_SYMBOL_GPL(snd_devm_alloc_dir_pages); int snd_dma_buffer_mmap(struct snd_dma_buffer *dmab, struct vm_area_struct *area) { - const struct snd_malloc_ops *ops = snd_dma_get_ops(dmab); + const struct snd_malloc_ops *ops; + if (!dmab) + return -ENOENT; + ops = snd_dma_get_ops(dmab); if (ops && ops->mmap) return ops->mmap(dmab, area); else |