patch-2.3.1 linux/include/asm-m68k/io.h

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diff -u --recursive --new-file v2.3.0/linux/include/asm-m68k/io.h linux/include/asm-m68k/io.h
@@ -72,6 +72,12 @@
 
 extern void iounmap(void *addr);
 
+/* Nothing to do */
+
+#define dma_cache_inv(_start,_size)		do { } while (0)
+#define dma_cache_wback(_start,_size)		do { } while (0)
+#define dma_cache_wback_inv(_start,_size)	do { } while (0)
+
 #endif /* __KERNEL__ */
 
 #endif /* _M68K_IO_H */

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