diff options
Diffstat (limited to 'kernel/dma/swiotlb.c')
| -rw-r--r-- | kernel/dma/swiotlb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c index 8b1360772..b1e2ce2f9 100644 --- a/kernel/dma/swiotlb.c +++ b/kernel/dma/swiotlb.c @@ -594,7 +594,8 @@ found: * unconditional bounce may prevent leaking swiotlb content (i.e. * kernel memory) to user-space. */ - swiotlb_bounce(orig_addr, tlb_addr, size, DMA_TO_DEVICE); + if (orig_addr) + swiotlb_bounce(orig_addr, tlb_addr, size, DMA_TO_DEVICE); return tlb_addr; } |