diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c
index 8564986..559db8f 100644
--- a/drivers/rtc/rtc-s5m.c
+++ b/drivers/rtc/rtc-s5m.c
@@ -56,6 +56,8 @@
 	 * auto-cleared after successful update.
 	 */
 	unsigned int udr_update;
+	/* Auto-cleared mask in UDR field for writing time and alarm */
+	unsigned int autoclear_udr_mask;
 	/* Mask for UDR field in 'udr_update' register */
 	unsigned int udr_mask;
 };
@@ -68,6 +70,7 @@
 	.alarm0			= S5M_ALARM0_SEC,
 	.alarm1			= S5M_ALARM1_SEC,
 	.udr_update		= S5M_RTC_UDR_CON,
+	.autoclear_udr_mask	= S5M_RTC_UDR_MASK,
 	.udr_mask		= S5M_RTC_UDR_MASK,
 };
 
@@ -82,6 +85,7 @@
 	.alarm0			= S2MPS_ALARM0_SEC,
 	.alarm1			= S2MPS_ALARM1_SEC,
 	.udr_update		= S2MPS_RTC_UDR_CON,
+	.autoclear_udr_mask	= S2MPS_RTC_WUDR_MASK,
 	.udr_mask		= S2MPS_RTC_WUDR_MASK,
 };
 
@@ -167,7 +171,7 @@
 
 	do {
 		ret = regmap_read(info->regmap, info->regs->udr_update, &data);
-	} while (--retry && (data & info->regs->udr_mask) && !ret);
+	} while (--retry && (data & info->regs->autoclear_udr_mask) && !ret);
 
 	if (!retry)
 		dev_err(info->dev, "waiting for UDR update, reached max number of retries\n");