diff options
| -rw-r--r-- | lib/swiotlb.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 277a2f6fde6b..aad34b1c77e2 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -539,7 +539,8 @@ 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; } EXPORT_SYMBOL_GPL(swiotlb_tbl_map_single); |