[MIPS] Fix build error on processors that don's support copy-on-write.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index 5a4c8a5..8c011aa 100644
--- a/include/asm-mips/io.h
+++ b/include/asm-mips/io.h
@@ -283,6 +283,24 @@ static inline void __iomem * __ioremap_mode(phys_t offset, unsigned long size,
 	__ioremap_mode((offset), (size), _CACHE_UNCACHED)
 
 /*
+ * ioremap_cachable -   map bus memory into CPU space
+ * @offset:         bus address of the memory
+ * @size:           size of the resource to map
+ *
+ * ioremap_nocache performs a platform specific sequence of operations to
+ * make bus memory CPU accessible via the readb/readw/readl/writeb/
+ * writew/writel functions and the other mmio helpers. The returned
+ * address is not guaranteed to be usable directly as a virtual
+ * address.
+ *
+ * This version of ioremap ensures that the memory is marked cachable by
+ * the CPU.  Also enables full write-combining.  Useful for some
+ * memory-like regions on I/O busses.
+ */
+#define ioremap_cachable(offset, size)					\
+	__ioremap_mode((offset), (size), PAGE_CACHABLE_DEFAULT)
+
+/*
  * These two are MIPS specific ioremap variant.  ioremap_cacheable_cow
  * requests a cachable mapping, ioremap_uncached_accelerated requests a
  * mapping using the uncached accelerated mode which isn't supported on