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-rw-r--r--arch/arm/mm/dma-mapping.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index f62aa0677e5..6b00be1f971 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1963,8 +1963,8 @@ arm_iommu_create_mapping(struct bus_type *bus, dma_addr_t base, size_t size)
mapping->nr_bitmaps = 1;
mapping->extensions = extensions;
mapping->base = base;
- mapping->size = bitmap_size << PAGE_SHIFT;
mapping->bits = BITS_PER_BYTE * bitmap_size;
+ mapping->size = mapping->bits << PAGE_SHIFT;
spin_lock_init(&mapping->lock);