rtc: xgene: stop caching alarm_time

There is no point in caching alarm_time for .read_alarm because
.read_alarm is only called at boo time and thus alarm_time is always 0.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

diff --git a/drivers/rtc/rtc-xgene.c b/drivers/rtc/rtc-xgene.c
index eb745de..6f7d764 100644 (file)
--- a/drivers/rtc/rtc-xgene.c
+++ b/drivers/rtc/rtc-xgene.c
@@ -35,7 +35,6 @@
 struct xgene_rtc_dev {
        struct rtc_device *rtc;
        struct device *dev;
-       unsigned long alarm_time;
        void __iomem *csr_base;
        struct clk *clk;
        unsigned int irq_wake;
@@ -68,7 +67,8 @@ static int xgene_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
        struct xgene_rtc_dev *pdata = dev_get_drvdata(dev);
 
-       rtc_time_to_tm(pdata->alarm_time, &alrm->time);
+       /* If possible, CMR should be read here */
+       rtc_time_to_tm(0, &alrm->time);
        alrm->enabled = readl(pdata->csr_base + RTC_CCR) & RTC_CCR_IE;
 
        return 0;
@@ -105,8 +105,7 @@ static int xgene_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
        unsigned long alarm_time;
 
        rtc_tm_to_time(&alrm->time, &alarm_time);
-       pdata->alarm_time = alarm_time;
-       writel((u32)pdata->alarm_time, pdata->csr_base + RTC_CMR);
+       writel((u32)alarm_time, pdata->csr_base + RTC_CMR);
 
        xgene_rtc_alarm_irq_enable(dev, alrm->enabled);