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-rw-r--r--arch/x86/kernel/amd_iommu_init.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 8c0be0902da..35fc9654c7a 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -175,7 +175,7 @@ static inline void update_last_devid(u16 devid)
static inline unsigned long tbl_size(int entry_size)
{
unsigned shift = PAGE_SHIFT +
- get_order(amd_iommu_last_bdf * entry_size);
+ get_order(((int)amd_iommu_last_bdf + 1) * entry_size);
return 1UL << shift;
}