1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 1ced8a0f7a52..cba12f34ff77 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1971,7 +1971,7 @@ static int extend_iommu_mapping(struct dma_iommu_mapping *mapping)
 {
         int next_bitmap;
 
-        if (mapping->nr_bitmaps > mapping->extensions)
+        if (mapping->nr_bitmaps >= mapping->extensions)
                 return -EINVAL;
 
         next_bitmap = mapping->nr_bitmaps;