diff options
| -rw-r--r-- | kernel/dma/direct.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c index d7cec866d16b..e269b6f9b444 100644 --- a/kernel/dma/direct.c +++ b/kernel/dma/direct.c @@ -399,11 +399,9 @@ int dma_direct_supported(struct device *dev, u64 mask) size_t dma_direct_max_mapping_size(struct device *dev) { - size_t size = SIZE_MAX; - /* If SWIOTLB is active, use its maximum mapping size */ - if (is_swiotlb_active()) - size = swiotlb_max_mapping_size(dev); - - return size; + if (is_swiotlb_active() && + (dma_addressing_limited(dev) || swiotlb_force == SWIOTLB_FORCE)) + return swiotlb_max_mapping_size(dev); + return SIZE_MAX; } |