From: Russell King <rmk+lkml@arm.linux.org.uk>

Provide an dummy implementation of devm_ioport_map() and
devm_ioport_unmap() to allow drivers (eg, pata_platform) to build for
platforms where CONFIG_NO_IOPORT is selected.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 include/linux/io.h |   13 +++++++++++++
 1 files changed, 13 insertions(+)

diff -puN include/linux/io.h~provide-dummy-devm_ioport_-if-has_ioport include/linux/io.h
--- a/include/linux/io.h~provide-dummy-devm_ioport_-if-has_ioport
+++ a/include/linux/io.h
@@ -33,9 +33,22 @@ int ioremap_page_range(unsigned long add
 /*
  * Managed iomap interface
  */
+#ifdef CONFIG_HAS_IOPORT
 void __iomem * devm_ioport_map(struct device *dev, unsigned long port,
 			       unsigned int nr);
 void devm_ioport_unmap(struct device *dev, void __iomem *addr);
+#else
+static inline void __iomem * devm_ioport_map(struct device *dev,
+					     unsigned long port,
+					     unsigned int nr)
+{
+	return NULL;
+}
+
+static inline void devm_ioport_unmap(struct device *dev, void __iomem *addr)
+{
+}
+#endif
 
 void __iomem * devm_ioremap(struct device *dev, unsigned long offset,
 			    unsigned long size);
_