xtensa: use physical addresses for bus addresses
Define virt_to_bus and bus_to_virt as virt_to_phys, and phys_to_virt,
respectively.
Signed-off-by: Chris Zankel <chris@zankel.net>
diff --git a/arch/xtensa/include/asm/io.h b/arch/xtensa/include/asm/io.h
index e6be5b9..700c2e6 100644
--- a/arch/xtensa/include/asm/io.h
+++ b/arch/xtensa/include/asm/io.h
@@ -62,6 +62,10 @@
static inline void iounmap(volatile void __iomem *addr)
{
}
+
+#define virt_to_bus virt_to_phys
+#define bus_to_virt phys_to_virt
+
#endif /* CONFIG_MMU */
/*