1 files changed, 10 insertions, 5 deletions

diff --git a/arch/microblaze/kernel/heartbeat.c b/arch/microblaze/kernel/heartbeat.c
index 1bdf20222b92..522751737cfa 100644
--- a/arch/microblaze/kernel/heartbeat.c
+++ b/arch/microblaze/kernel/heartbeat.c
@@ -45,6 +45,7 @@ void heartbeat(void)
 void setup_heartbeat(void)
 {
         struct device_node *gpio = NULL;
+        int *prop;
         int j;
         char *gpio_list[] = {
                                 "xlnx,xps-gpio-1.00.a",
@@ -58,10 +59,14 @@ void setup_heartbeat(void)
                         break;
         }
 
-        base_addr = *(int *) of_get_property(gpio, "reg", NULL);
-        base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE);
-        printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr);
+        if (gpio) {
+                base_addr = *(int *) of_get_property(gpio, "reg", NULL);
+                base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE);
+                printk(KERN_NOTICE "Heartbeat GPIO at 0x%x\n", base_addr);
 
-        if (*(int *) of_get_property(gpio, "xlnx,is-bidir", NULL))
-                out_be32(base_addr + 4, 0); /* GPIO is configured as output */
+                /* GPIO is configured as output */
+                prop = (int *) of_get_property(gpio, "xlnx,is-bidir", NULL);
+                if (prop)
+                        out_be32(base_addr + 4, 0);
+        }
 }