[ARM] nommu: Provide a simple flush_dcache_page implementation

nommu doesn't require a complex flush_dcache_page implementation
like the MMU-ful CPUs do, so provide a simplified version in nommu.c
and omit flush.c from the build as appropriate.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 934c551d93da..10166fdeaace 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -4,10 +4,18 @@
  * ARM uCLinux supporting functions.
  */
 #include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/pagemap.h>
 
+#include <asm/cacheflush.h>
 #include <asm/io.h>
 #include <asm/page.h>
 
+void flush_dcache_page(struct page *page)
+{
+        __cpuc_flush_dcache_page(page_address(page));
+}
+
 void __iomem *__ioremap_pfn(unsigned long pfn, unsigned long offset,
                             size_t size, unsigned long flags)
 {