[PATCH] m68k: Dummy dma mapping

From: Geert Uytterhoeven <geert@linux-m68k.org>

Add a dummy <asm-generic/dma-mapping-broken.h> for systems that don't support
the new DMA API, and make m68k use it if !CONFIG_PCI

include/asm-generic/dma-mapping-broken.h

+#ifndef _ASM_GENERIC_DMA_MAPPING_H
+#define _ASM_GENERIC_DMA_MAPPING_H
+
+/* This is used for archs that do not support DMA */
+
+
+static inline void *
+dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle,
+		   int flag)
+{
+	BUG();
+	return 0;
+}
+
+static inline void
+dma_free_coherent(struct device *dev, size_t size, void *cpu_addr,
+		    dma_addr_t dma_handle)
+{
+	BUG();
+}
+
+#endif /* _ASM_GENERIC_DMA_MAPPING_H */

include/asm-m68k/dma-mapping.h

@@ -5,6 +5,8 @@
 
 #ifdef CONFIG_PCI
 #include <asm-generic/dma-mapping.h>
+#else
+#include <asm-generic/dma-mapping-broken.h>
 #endif
 
 #endif  /* _M68K_DMA_MAPPING_H */