[RFC] dove: fix __io() definition to use bus based offset

[Eric Miao]

    [ARM] dove: fix __io() definition to use bus based offset

    __io() should be based on DOVE_PCIE0_IO_BUS_BASE instead of _PHYS_BASE,
    and use __typesafe_io() for consistency.

    Cc: Nicolas Pitre <nico at fluxnic.net>
    Cc: Lennert Buijtenhek <buytenh at wantstofly.org>
    Cc: Saeed Bishara <saeed at marvell.com>
    Signed-off-by: Eric Miao <eric.miao at canonical.com>

diff --git a/arch/arm/mach-dove/include/mach/io.h
b/arch/arm/mach-dove/include/mach/io.h
index 3b3e472..067435e 100644
--- a/arch/arm/mach-dove/include/mach/io.h
+++ b/arch/arm/mach-dove/include/mach/io.h
@@ -11,10 +11,9 @@

 #include "dove.h"

-#define IO_SPACE_LIMIT		0xffffffff
-
-#define __io(a)  ((void __iomem *)(((a) - DOVE_PCIE0_IO_PHYS_BASE) +\
-				   DOVE_PCIE0_IO_VIRT_BASE))
-#define __mem_pci(a)		(a)
+#define IO_SPACE_LIMIT	0xffffffff
+#define __io(a)		__typesafe_io((a) - DOVE_PCIE0_IO_BUS_BASE + \
+					    DOVE_PCIE0_IO_VIRT_BASE)
+#define __mem_pci(a)	(a)

 #endif