diff --git a/[refs] b/[refs]
index 8a9fb1660df3..12f419ea3c9b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b4f555081fdd27d13e6ff39d455d5aefae9d2c0c
+refs/heads/master: 615bb29ccbe9fa06d9f33b29d9c3f51340726656
diff --git a/trunk/drivers/rtc/rtc-cmos.c b/trunk/drivers/rtc/rtc-cmos.c
index e3fe83a23cf7..29cf1457ca10 100644
--- a/trunk/drivers/rtc/rtc-cmos.c
+++ b/trunk/drivers/rtc/rtc-cmos.c
@@ -120,7 +120,8 @@ static int cmos_read_alarm(struct device *dev, struct rtc_wkalrm *t)
 	t->time.tm_hour = CMOS_READ(RTC_HOURS_ALARM);
 
 	if (cmos->day_alrm) {
-		t->time.tm_mday = CMOS_READ(cmos->day_alrm);
+		/* ignore upper bits on readback per ACPI spec */
+		t->time.tm_mday = CMOS_READ(cmos->day_alrm) & 0x3f;
 		if (!t->time.tm_mday)
 			t->time.tm_mday = -1;