2 files changed, 12 insertions, 2 deletions

diff --git a/arch/mips/txx9/generic/setup.c b/arch/mips/txx9/generic/setup.c
index 517828e1ec92..452cb9ea12c0 100644
--- a/arch/mips/txx9/generic/setup.c
+++ b/arch/mips/txx9/generic/setup.c
@@ -200,3 +200,13 @@ asmlinkage void plat_irq_dispatch(void)
         else
                 spurious_interrupt();
 }
+
+/* see include/asm-mips/mach-tx39xx/mangle-port.h, for example. */
+#ifdef NEEDS_TXX9_SWIZZLE_ADDR_B
+static unsigned long __swizzle_addr_none(unsigned long port)
+{
+        return port;
+}
+unsigned long (*__swizzle_addr_b)(unsigned long port) = __swizzle_addr_none;
+EXPORT_SYMBOL(__swizzle_addr_b);
+#endif
diff --git a/arch/mips/txx9/jmr3927/setup.c b/arch/mips/txx9/jmr3927/setup.c
index 43a8dad22ef7..61edc4ac1dbc 100644
--- a/arch/mips/txx9/jmr3927/setup.c
+++ b/arch/mips/txx9/jmr3927/setup.c
@@ -315,7 +315,7 @@ static void __init tx3927_setup(void)
 }
 
 /* This trick makes rtc-ds1742 driver usable as is. */
-unsigned long __swizzle_addr_b(unsigned long port)
+static unsigned long jmr3927_swizzle_addr_b(unsigned long port)
 {
         if ((port & 0xffff0000) != JMR3927_IOC_NVRAMB_ADDR)
                 return port;
@@ -326,7 +326,6 @@ unsigned long __swizzle_addr_b(unsigned long port)
         return port | 1;
 #endif
 }
-EXPORT_SYMBOL(__swizzle_addr_b);
 
 static int __init jmr3927_rtc_init(void)
 {
@@ -361,6 +360,7 @@ static int __init jmr3927_wdt_init(void)
 
 static void __init jmr3927_device_init(void)
 {
+        __swizzle_addr_b = jmr3927_swizzle_addr_b;
         jmr3927_rtc_init();
         jmr3927_wdt_init();
 }