1 files changed, 6 insertions, 0 deletions

diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c
index cacfd31e8ec9..7657fd21cd3f 100644
--- a/arch/mips/mm/ioremap.c
+++ b/arch/mips/mm/ioremap.c
@@ -190,3 +190,9 @@ void __iounmap(const volatile void __iomem *addr)
 
 EXPORT_SYMBOL(__ioremap);
 EXPORT_SYMBOL(__iounmap);
+
+int __virt_addr_valid(const volatile void *kaddr)
+{
+        return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
+}
+EXPORT_SYMBOL_GPL(__virt_addr_valid);