diff options
| -rw-r--r-- | kernel/dma-coherent.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c index 8056d081609c..038707404b76 100644 --- a/kernel/dma-coherent.c +++ b/kernel/dma-coherent.c @@ -118,6 +118,8 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size, mem = dev->dma_mem; if (!mem) return 0; + if (unlikely(size > mem->size)) + return 0; pageno = bitmap_find_free_region(mem->bitmap, mem->size, order); if (pageno >= 0) { |