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From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: Alessandro Zummo <a.zummo@towertech.it>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: linux-rtc@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] rtc: pl030: switch to rtc_time64_to_tm/rtc_tm_to_time64
Date: Fri,  6 Mar 2020 01:57:30 +0100	[thread overview]
Message-ID: <20200306005730.38268-3-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20200306005730.38268-1-alexandre.belloni@bootlin.com>

Call the 64bit versions of rtc_tm time conversion to avoid the y2106 issue.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-pl030.c | 21 +++++++--------------
 1 file changed, 7 insertions(+), 14 deletions(-)

diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index 55776e8fa87c..ebe03eba8f5f 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -36,27 +36,24 @@ static int pl030_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
 	struct pl030_rtc *rtc = dev_get_drvdata(dev);
 
-	rtc_time_to_tm(readl(rtc->base + RTC_MR), &alrm->time);
+	rtc_time64_to_tm(readl(rtc->base + RTC_MR), &alrm->time);
 	return 0;
 }
 
 static int pl030_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 {
 	struct pl030_rtc *rtc = dev_get_drvdata(dev);
-	unsigned long time;
-	int ret;
 
-	ret = rtc_tm_to_time(&alrm->time, &time);
-	if (ret == 0)
-		writel(time, rtc->base + RTC_MR);
-	return ret;
+	writel(rtc_tm_to_time64(&alrm->time), rtc->base + RTC_MR);
+
+	return 0;
 }
 
 static int pl030_read_time(struct device *dev, struct rtc_time *tm)
 {
 	struct pl030_rtc *rtc = dev_get_drvdata(dev);
 
-	rtc_time_to_tm(readl(rtc->base + RTC_DR), tm);
+	rtc_time64_to_tm(readl(rtc->base + RTC_DR), tm);
 
 	return 0;
 }
@@ -72,14 +69,10 @@ static int pl030_read_time(struct device *dev, struct rtc_time *tm)
 static int pl030_set_time(struct device *dev, struct rtc_time *tm)
 {
 	struct pl030_rtc *rtc = dev_get_drvdata(dev);
-	unsigned long time;
-	int ret;
 
-	ret = rtc_tm_to_time(tm, &time);
-	if (ret == 0)
-		writel(time + 1, rtc->base + RTC_LR);
+	writel(rtc_tm_to_time64(tm) + 1, rtc->base + RTC_LR);
 
-	return ret;
+	return 0;
 }
 
 static const struct rtc_class_ops pl030_ops = {
-- 
2.24.1


      parent reply	other threads:[~2020-03-06  0:57 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-06  0:57 [PATCH 1/3] rtc: pl030: set range Alexandre Belloni
2020-03-06  0:57 ` [PATCH 2/3] rtc: pl030: remove useless invalid alarm handling Alexandre Belloni
2020-03-06  0:57 ` Alexandre Belloni [this message]

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