3 files changed, 31 insertions, 11 deletions

diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32
index 5c04bbb08d36..62e280734dcb 100644
--- a/arch/sh/mm/Makefile_32
+++ b/arch/sh/mm/Makefile_32
@@ -15,7 +15,7 @@ endif
 obj-y                   += $(cache-y)
 
 mmu-y                   := tlb-nommu.o pg-nommu.o
-mmu-$(CONFIG_MMU)       := fault_32.o tlbflush_32.o ioremap_32.o
+mmu-$(CONFIG_MMU)       := fault_32.o tlbflush_32.o ioremap_32.o pg-mmu.o
 
 obj-y                   += $(mmu-y)
 obj-$(CONFIG_DEBUG_FS)  += asids-debugfs.o
@@ -29,10 +29,6 @@ tlb-$(CONFIG_CPU_SH3)		:= tlb-sh3.o
 tlb-$(CONFIG_CPU_SH4)           := tlb-sh4.o
 tlb-$(CONFIG_CPU_HAS_PTEAEX)    := tlb-pteaex.o
 obj-y                           += $(tlb-y)
-ifndef CONFIG_CACHE_OFF
-obj-$(CONFIG_CPU_SH4)           += pg-sh4.o
-obj-$(CONFIG_SH7705_CACHE_32KB) += pg-sh4.o
-endif
 endif
 
 obj-$(CONFIG_HUGETLB_PAGE)      += hugetlbpage.o
diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c
index 86762092508c..3e2d7321b636 100644
--- a/arch/sh/mm/cache-sh5.c
+++ b/arch/sh/mm/cache-sh5.c
@@ -831,4 +831,21 @@ void clear_user_page(void *to, unsigned long address, struct page *page)
         else
                 sh64_clear_user_page_coloured(to, address);
 }
+
+void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
+                       unsigned long vaddr, void *dst, const void *src,
+                       unsigned long len)
+{
+        flush_cache_page(vma, vaddr, page_to_pfn(page));
+        memcpy(dst, src, len);
+        flush_icache_user_range(vma, page, vaddr, len);
+}
+
+void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
+                         unsigned long vaddr, void *dst, const void *src,
+                         unsigned long len)
+{
+        flush_cache_page(vma, vaddr, page_to_pfn(page));
+        memcpy(dst, src, len);
+}
 #endif
diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-mmu.c
index 4d93070b8220..356d2cdcb209 100644
--- a/arch/sh/mm/pg-sh4.c
+++ b/arch/sh/mm/pg-mmu.c
@@ -1,5 +1,5 @@
 /*
- * arch/sh/mm/pg-sh4.c
+ * arch/sh/mm/pg-mmu.c
  *
  * Copyright (C) 1999, 2000, 2002  Niibe Yutaka
  * Copyright (C) 2002 - 2009  Paul Mundt
@@ -22,11 +22,13 @@ static pte_t *kmap_coherent_pte;
 
 void __init kmap_coherent_init(void)
 {
+#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)
         unsigned long vaddr;
 
         /* cache the first coherent kmap pte */
         vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
         kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
+#endif
 }
 
 static inline void *kmap_coherent(struct page *page, unsigned long addr)
@@ -62,13 +64,15 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
                        unsigned long vaddr, void *dst, const void *src,
                        unsigned long len)
 {
-        if (page_mapped(page) && !test_bit(PG_dcache_dirty, &page->flags)) {
+        if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
+            !test_bit(PG_dcache_dirty, &page->flags)) {
                 void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(vto, src, len);
                 kunmap_coherent(vto);
         } else {
                 memcpy(dst, src, len);
-                set_bit(PG_dcache_dirty, &page->flags);
+                if (boot_cpu_data.dcache.n_aliases)
+                        set_bit(PG_dcache_dirty, &page->flags);
         }
 
         if (vma->vm_flags & VM_EXEC)
@@ -79,13 +83,15 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
                          unsigned long vaddr, void *dst, const void *src,
                          unsigned long len)
 {
-        if (page_mapped(page) && !test_bit(PG_dcache_dirty, &page->flags)) {
+        if (boot_cpu_data.dcache.n_aliases && page_mapped(page) &&
+            !test_bit(PG_dcache_dirty, &page->flags)) {
                 void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
                 memcpy(dst, vfrom, len);
                 kunmap_coherent(vfrom);
         } else {
                 memcpy(dst, src, len);
-                set_bit(PG_dcache_dirty, &page->flags);
+                if (boot_cpu_data.dcache.n_aliases)
+                        set_bit(PG_dcache_dirty, &page->flags);
         }
 }
 
@@ -96,7 +102,8 @@ void copy_user_highpage(struct page *to, struct page *from,
 
         vto = kmap_atomic(to, KM_USER1);
 
-        if (page_mapped(from) && !test_bit(PG_dcache_dirty, &from->flags)) {
+        if (boot_cpu_data.dcache.n_aliases && page_mapped(from) &&
+            !test_bit(PG_dcache_dirty, &from->flags)) {
                 vfrom = kmap_coherent(from, vaddr);
                 copy_page(vto, vfrom);
                 kunmap_coherent(vfrom);