1 files changed, 17 insertions, 6 deletions

diff --git a/arch/powerpc/sysdev/rtc_cmos_setup.c b/arch/powerpc/sysdev/rtc_cmos_setup.c
index c09ddc0dbeb3..c1879ebfd4f4 100644
--- a/arch/powerpc/sysdev/rtc_cmos_setup.c
+++ b/arch/powerpc/sysdev/rtc_cmos_setup.c
@@ -21,6 +21,7 @@ static int  __init add_rtc(void)
         struct device_node *np;
         struct platform_device *pd;
         struct resource res[2];
+        unsigned int num_res = 1;
         int ret;
 
         memset(&res, 0, sizeof(res));
@@ -41,14 +42,24 @@ static int  __init add_rtc(void)
         if (res[0].start != RTC_PORT(0))
                 return -EINVAL;
 
-        /* Use a fixed interrupt value of 8 since on PPC if we are using this
-         * its off an i8259 which we ensure has interrupt numbers 0..15. */
-        res[1].start = 8;
-        res[1].end = 8;
-        res[1].flags = IORESOURCE_IRQ;
+        np = of_find_compatible_node(NULL, NULL, "chrp,iic");
+        if (!np)
+                np = of_find_compatible_node(NULL, NULL, "pnpPNP,000");
+        if (np) {
+                of_node_put(np);
+                /*
+                 * Use a fixed interrupt value of 8 since on PPC if we are
+                 * using this its off an i8259 which we ensure has interrupt
+                 * numbers 0..15.
+                 */
+                res[1].start = 8;
+                res[1].end = 8;
+                res[1].flags = IORESOURCE_IRQ;
+                num_res++;
+        }
 
         pd = platform_device_register_simple("rtc_cmos", -1,
-                                             &res[0], 2);
+                                             &res[0], num_res);
 
         if (IS_ERR(pd))
                 return PTR_ERR(pd);