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-rw-r--r--include/linux/io.h8
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/io.h b/include/linux/io.h
index 09d351236379..8423dd376514 100644
--- a/include/linux/io.h
+++ b/include/linux/io.h
@@ -27,8 +27,16 @@ struct device;
void __iowrite32_copy(void __iomem *to, const void *from, size_t count);
void __iowrite64_copy(void __iomem *to, const void *from, size_t count);
+#ifdef CONFIG_MMU
int ioremap_page_range(unsigned long addr, unsigned long end,
unsigned long phys_addr, pgprot_t prot);
+#else
+static inline int ioremap_page_range(unsigned long addr, unsigned long end,
+ unsigned long phys_addr, pgprot_t prot)
+{
+ return 0;
+}
+#endif
/*
* Managed iomap interface