rtc: diasemi: stop validating rtc_time in .read_time

The RTC core is always calling rtc_valid_tm after the read_time callback.
It is not necessary to call it before returning from the callback.
Acked-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-da9052.c

@@ -187,8 +187,7 @@ static int da9052_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
 			rtc_tm->tm_min  = v[0][1] & DA9052_RTC_MIN;
 			rtc_tm->tm_sec  = v[0][0] & DA9052_RTC_SEC;
 
-			ret = rtc_valid_tm(rtc_tm);
-			return ret;
+			return 0;
 		}
 
 		idx = (1-idx);

drivers/rtc/rtc-da9055.c

@@ -158,7 +158,7 @@ static int da9055_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
 	rtc_tm->tm_min  = v[1] & DA9055_RTC_MIN;
 	rtc_tm->tm_sec  = v[0] & DA9055_RTC_SEC;
 
-	return rtc_valid_tm(rtc_tm);
+	return 0;
 }
 
 static int da9055_rtc_set_time(struct device *dev, struct rtc_time *tm)

drivers/rtc/rtc-da9063.c

@@ -256,7 +256,7 @@ static int da9063_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	else
 		rtc->rtc_sync = false;
 
-	return rtc_valid_tm(tm);
+	return 0;
 }
 
 static int da9063_rtc_set_time(struct device *dev, struct rtc_time *tm)