diff --git a/arch/ppc/syslib/ppc4xx_dma.c b/arch/ppc/syslib/ppc4xx_dma.c
index f15e64285f96..05ccd598dd4e 100644
--- a/arch/ppc/syslib/ppc4xx_dma.c
+++ b/arch/ppc/syslib/ppc4xx_dma.c
@@ -30,6 +30,7 @@
 
 #include <asm/system.h>
 #include <asm/io.h>
+#include <asm/dma.h>
 #include <asm/ppc4xx_dma.h>
 
 ppc_dma_ch_t dma_channels[MAX_PPC4xx_DMA_CHANNELS];
diff --git a/include/asm-ppc/ppc4xx_dma.h b/include/asm-ppc/ppc4xx_dma.h
index a415001165fa..46a086fff816 100644
--- a/include/asm-ppc/ppc4xx_dma.h
+++ b/include/asm-ppc/ppc4xx_dma.h
@@ -33,9 +33,6 @@
 
 #define MAX_PPC4xx_DMA_CHANNELS		4
 
-/* in arch/ppc/kernel/setup.c -- Cort */
-extern unsigned long DMA_MODE_WRITE, DMA_MODE_READ;
-
 /*
  * Function return status codes
  * These values are used to indicate whether or not the function