lib: Add a generic version of devmem_is_allowed()

[linux-2.6-microblaze.git] / include / asm-generic / io.h

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index dabf8cb..da2e861 100644 (file)
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -1122,6 +1122,10 @@ static inline void memcpy_toio(volatile void __iomem *addr, const void *buffer,
 }
 #endif
 
+#ifndef CONFIG_GENERIC_DEVMEM_IS_ALLOWED
+extern int devmem_is_allowed(unsigned long pfn);
+#endif
+
 #endif /* __KERNEL__ */
 
 #endif /* __ASM_GENERIC_IO_H */