Add and use a generic version of devmem_is_allowed()

[sfrench/cifs-2.6.git] / include / asm-generic / io.h

diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
index 9ea83d80eb6f93f62fa98ba9875d03ed58871a69..c6af40ce03befec1740fd9ab705648e1eba2bf81 100644 (file)
--- a/include/asm-generic/io.h
+++ b/include/asm-generic/io.h
@@ -1137,6 +1137,10 @@ 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 */