1 files changed, 1 insertions, 1 deletions

diff --git a/arch/parisc/mm/ioremap.c b/arch/parisc/mm/ioremap.c
index 27384567a1d0..47a1d2ac9419 100644
--- a/arch/parisc/mm/ioremap.c
+++ b/arch/parisc/mm/ioremap.c
@@ -188,7 +188,7 @@ void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned l
 }
 EXPORT_SYMBOL(__ioremap);
 
-void iounmap(void __iomem *addr)
+void iounmap(const volatile void __iomem *addr)
 {
         if (addr > high_memory)
                 return vfree((void *) (PAGE_MASK & (unsigned long __force) addr));