rtc: mv: remove mv_rtc_alarm_ops

Move the alarm callbacks in mv_rtc_ops and clear RTC_FEATURE_ALARM to
signal that alarms are not available instead of having a supplementary
struct rtc_class_ops.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210110231752.1418816-6-alexandre.belloni@bootlin.com

drivers/rtc/rtc-mv.c

@@ -200,11 +200,6 @@ static irqreturn_t mv_rtc_interrupt(int irq, void *data)
 static const struct rtc_class_ops mv_rtc_ops = {
 	.read_time	= mv_rtc_read_time,
 	.set_time	= mv_rtc_set_time,
-};
-
-static const struct rtc_class_ops mv_rtc_alarm_ops = {
-	.read_time	= mv_rtc_read_time,
-	.set_time	= mv_rtc_set_time,
 	.read_alarm	= mv_rtc_read_alarm,
 	.set_alarm	= mv_rtc_set_alarm,
 	.alarm_irq_enable = mv_rtc_alarm_irq_enable,
@@ -268,13 +263,12 @@ static int __init mv_rtc_probe(struct platform_device *pdev)
 		}
 	}
 
-	if (pdata->irq >= 0) {
+	if (pdata->irq >= 0)
 		device_init_wakeup(&pdev->dev, 1);
-		pdata->rtc->ops = &mv_rtc_alarm_ops;
-	} else {
-		pdata->rtc->ops = &mv_rtc_ops;
-	}
+	else
+		clear_bit(RTC_FEATURE_ALARM, pdata->rtc->features);
 
+	pdata->rtc->ops = &mv_rtc_ops;
 	pdata->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000;
 	pdata->rtc->range_max = RTC_TIMESTAMP_END_2099;