linux-kernel - [PATCH 33/51] rtc: pl030: stop using rtc deprecated functions

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Date:   Tue, 20 Jun 2017 11:35:41 +0200
From:   Benjamin Gaignard <benjamin.gaignard@...aro.org>
To:     benjamin.gaignard@...aro.org
Cc:     linaro-kernel@...ts.linaro.org,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
        rtc-linux@...glegroups.com, linux-kernel@...r.kernel.org
Subject: [PATCH 33/51] rtc: pl030: stop using rtc deprecated functions

rtc_time_to_tm() and rtc_tm_to_time() are deprecated because they
rely on 32bits variables and that will make rtc break in y2038/2016.
Stop using those two functions to safer 64bits ones.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@...aro.org>
CC: Alessandro Zummo <a.zummo@...ertech.it>
CC: Alexandre Belloni <alexandre.belloni@...e-electrons.com>
CC: rtc-linux@...glegroups.com
CC: linux-kernel@...r.kernel.org
---
 drivers/rtc/rtc-pl030.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c
index f85a1a9..c917051 100644
--- a/drivers/rtc/rtc-pl030.c
+++ b/drivers/rtc/rtc-pl030.c
@@ -39,24 +39,26 @@ 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;
+	unsigned long long time;
 	int ret;
 
 	/*
 	 * At the moment, we can only deal with non-wildcarded alarm times.
 	 */
 	ret = rtc_valid_tm(&alrm->time);
-	if (ret == 0)
-		ret = rtc_tm_to_time(&alrm->time, &time);
-	if (ret == 0)
-		writel(time, rtc->base + RTC_MR);
+	if (ret)
+		return ret;
+
+	time = rtc_tm_to_time64(&alrm->time);
+	writel(time, rtc->base + RTC_MR);
+
 	return ret;
 }
 
@@ -64,7 +66,7 @@ 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;
 }
@@ -81,13 +83,11 @@ 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);
+	time = rtc_tm_to_time64(tm);
+	writel(time + 1, rtc->base + RTC_LR);
 
-	return ret;
+	return 0;
 }
 
 static const struct rtc_class_ops pl030_ops = {
-- 
1.9.1