Merge branch 'acpi-scan' into acpi-cleanup

[firefly-linux-kernel-4.4.55.git] / arch / mips / mm / ioremap.c

diff --git a/arch/mips/mm/ioremap.c b/arch/mips/mm/ioremap.c
index cacfd31e8ec9d1121c86e81feb35fac4344a9a3b..7657fd21cd3fb35779ad6a37ff65c73547cedc88 100644 (file)
--- 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);