[ARM] 4554/1: replace consistent_sync() with flush_ioremap_region()

This fixes a regression from around 2.6.18, consistent_sync() will now BUG()
under these circumstances.  The use of consistent_sync() was a hack, replacing
it's usage here with a new function, flush_ioremap_region().

Signed-off-by: Jared Hulbert <jaredeh@gmail.com>
Acked-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 0 deletions

diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index d1294a46c70c..6c1c968b2987 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -426,6 +426,13 @@ static inline void flush_anon_page(struct vm_area_struct *vma,
  */
 #define flush_icache_page(vma,page)     do { } while (0)
 
+static inline void flush_ioremap_region(unsigned long phys, void __iomem *virt,
+        unsigned offset, size_t size)
+{
+        const void *start = (void __force *)virt + offset;
+        dmac_inv_range(start, start + size);
+}
+
 #define __cacheid_present(val)                  (val != read_cpuid(CPUID_ID))
 #define __cacheid_type_v7(val)                  ((val & (7 << 29)) == (4 << 29))