diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
index 4267789..2e84a64 100644
--- a/drivers/rtc/rtc-cmos.c
+++ b/drivers/rtc/rtc-cmos.c
@@ -1101,7 +1101,6 @@ static __init void cmos_of_init(struct platform_device *pdev)
 }
 #else
 static inline void cmos_of_init(struct platform_device *pdev) {}
-#define of_cmos_match NULL
 #endif
 /*----------------------------------------------------------------*/
 
@@ -1143,7 +1142,7 @@ static struct platform_driver cmos_platform_driver = {
 #ifdef CONFIG_PM
 		.pm		= &cmos_pm_ops,
 #endif
-		.of_match_table = of_cmos_match,
+		.of_match_table = of_match_ptr(of_cmos_match),
 	}
 };