diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 29bd37b1488e42ee7e5a74d5beb5cf5ba680b059..bf0c263cb6fd036ec3f3f9e971799dc41f18fa56 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -158,7 +158,6 @@ void __init paging_init(void)
 	 * Setup some defaults for the zone sizes.. these should be safe
 	 * regardless of distcontiguous memory or MMU settings.
 	 */
-	zones_size[ZONE_DMA] = 0 >> PAGE_SHIFT;
 	zones_size[ZONE_NORMAL] = __MEMORY_SIZE >> PAGE_SHIFT;
 #ifdef CONFIG_HIGHMEM
 	zones_size[ZONE_HIGHMEM] = 0 >> PAGE_SHIFT;
@@ -170,8 +169,6 @@ void __init paging_init(void)
 	 * the zone sizes accordingly, in addition to turning it on.
 	 */
 	{
-		unsigned long max_dma, low, start_pfn;
-
 		/* We don't need to map the kernel through the TLB, as
 		 * it is permanatly mapped using P1. So clear the
 		 * entire pgd. */
@@ -179,19 +176,7 @@ void __init paging_init(void)
 
 		/* Turn on the MMU */
 		enable_mmu();
-
-		/* Fixup the zone sizes */
-		start_pfn = START_PFN;
-		max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
-		low = MAX_LOW_PFN;
-
-		if (low < max_dma) {
-			zones_size[ZONE_DMA] = low - start_pfn;
-			zones_size[ZONE_NORMAL] = 0;
-		} else {
-			zones_size[ZONE_DMA] = max_dma - start_pfn;
-			zones_size[ZONE_NORMAL] = low - max_dma;
-		}
+		zones_size[ZONE_NORMAL] = MAX_LOW_PFN - START_PFN;
 	}
 
 	/* Set an initial value for the MMU.TTB so we don't have to
diff --git a/arch/sh64/Kconfig b/arch/sh64/Kconfig
index 7bc0744b7ab6aca55207c96740c48c793fa286e4..e14b533558c8a87fc712c17252dc22ea140318cd 100644
--- a/arch/sh64/Kconfig
+++ b/arch/sh64/Kconfig
@@ -36,9 +36,6 @@ config GENERIC_CALIBRATE_DELAY
 config RWSEM_XCHGADD_ALGORITHM
 	bool
 
-config GENERIC_ISA_DMA
-	bool
-
 config ARCH_HAS_ILOG2_U32
 	bool
 	default n
diff --git a/arch/sh64/mm/init.c b/arch/sh64/mm/init.c
index 83295bd21aa7d050c3046e5b1189a66c793fcf51..5dc08787259c1220acf701e1e2730ee85a125c9c 100644
--- a/arch/sh64/mm/init.c
+++ b/arch/sh64/mm/init.c
@@ -118,10 +118,7 @@ void __init paging_init(void)
 
 	mmu_context_cache = MMU_CONTEXT_FIRST_VERSION;
 
-        /*
-	 * All memory is good as ZONE_NORMAL (fall-through) and ZONE_DMA.
-         */
-	zones_size[ZONE_DMA] = MAX_LOW_PFN - START_PFN;
+	zones_size[ZONE_NORMAL] = MAX_LOW_PFN - START_PFN;
 	NODE_DATA(0)->node_mem_map = NULL;
 	free_area_init_node(0, NODE_DATA(0), zones_size, __MEMORY_START >> PAGE_SHIFT, 0);
 }