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

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

2 files changed, 19 insertions, 1 deletions

diff --git a/arch/mips/lib/iomap.c b/arch/mips/lib/iomap.c
index 7e2ced715cfb..f4ac5bbcd81f 100644
--- a/arch/mips/lib/iomap.c
+++ b/arch/mips/lib/iomap.c
@@ -63,7 +63,7 @@ void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen)
                 return ioport_map(start, len);
         if (flags & IORESOURCE_MEM) {
                 if (flags & IORESOURCE_CACHEABLE)
-                        return ioremap_cacheable_cow(start, len);
+                        return ioremap_cachable(start, len);
                 return ioremap_nocache(start, len);
         }
 
diff --git a/include/asm-mips/io.h b/include/asm-mips/io.h
index 5a4c8a54b8f4..8c011aa61afa 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