1 files changed, 1 insertions, 1 deletions

diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index 2ffca63602c5..7b278d83739e 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -174,7 +174,7 @@ void __iomem * __ioremap(unsigned long addr, unsigned long size,
         pa = addr & PAGE_MASK;
         size = PAGE_ALIGN(addr + size) - pa;
 
-        if (size == 0)
+        if ((size == 0) || (pa == 0))
                 return NULL;
 
         if (mem_init_done) {