1 files changed, 1 insertions, 1 deletions

diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
index 5358fcc7f61e..f7457fea6de8 100644
--- a/arch/arm/mm/mmap.c
+++ b/arch/arm/mm/mmap.c
@@ -124,7 +124,7 @@ int valid_phys_addr_range(unsigned long addr, size_t size)
 {
         if (addr < PHYS_OFFSET)
                 return 0;
-        if (addr + size > __pa(high_memory))
+        if (addr + size >= __pa(high_memory - 1))
                 return 0;
 
         return 1;