diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
index acd8e9ed474..87c67b42bc0 100644
--- a/drivers/char/mbcs.c
+++ b/drivers/char/mbcs.c
@@ -15,6 +15,7 @@
 #include <linux/moduleparam.h>
 #include <linux/types.h>
 #include <linux/ioport.h>
+#include <linux/kernel.h>
 #include <linux/notifier.h>
 #include <linux/reboot.h>
 #include <linux/init.h>
@@ -715,8 +716,8 @@ static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char
 	 */
 	debug0 = *(uint64_t *) soft->debug_addr;
 
-	return sprintf(buf, "0x%lx 0x%lx\n",
-		       (debug0 >> 32), (debug0 & 0xffffffff));
+	return sprintf(buf, "0x%x 0x%x\n",
+		       upper_32_bits(debug0), lower_32_bits(debug0));
 }
 
 static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)