--- zzzz-none-000/linux-2.6.28.10/include/linux/io.h	2009-05-02 18:54:43.000000000 +0000
+++ puma5-6360-529/linux-2.6.28.10/include/linux/io.h	2009-01-08 16:06:36.000000000 +0000
@@ -63,8 +63,10 @@
 void __iomem *devm_ioremap_nocache(struct device *dev, resource_size_t offset,
 				    unsigned long size);
 void devm_iounmap(struct device *dev, void __iomem *addr);
+#ifndef check_signature   /*--- wenn es also kein macro ist ---*/
 int check_signature(const volatile void __iomem *io_addr,
 			const unsigned char *signature, int length);
+#endif /*--- #ifndef check_signature ---*/   
 void devm_ioremap_release(struct device *dev, void *res);
 
 #endif /* _LINUX_IO_H */