linux-kernel - [PATCH 050/100] rtc: nuc900: stop validating rtc_time in .read

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Date:   Wed, 21 Feb 2018 21:55:45 +0100
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     linux-rtc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Subject: [PATCH 050/100] rtc: nuc900: 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.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-nuc900.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/drivers/rtc/rtc-nuc900.c b/drivers/rtc/rtc-nuc900.c
index 4ed81117cf5f..7da664a77181 100644
--- a/drivers/rtc/rtc-nuc900.c
+++ b/drivers/rtc/rtc-nuc900.c
@@ -102,8 +102,8 @@ static int *check_rtc_access_enable(struct nuc900_rtc *nuc900_rtc)
 	return NULL;
 }
 
-static int nuc900_rtc_bcd2bin(unsigned int timereg,
-				unsigned int calreg, struct rtc_time *tm)
+static void nuc900_rtc_bcd2bin(unsigned int timereg,
+			       unsigned int calreg, struct rtc_time *tm)
 {
 	tm->tm_mday	= bcd2bin(calreg >> 0);
 	tm->tm_mon	= bcd2bin(calreg >> 8);
@@ -112,8 +112,6 @@ static int nuc900_rtc_bcd2bin(unsigned int timereg,
 	tm->tm_sec	= bcd2bin(timereg >> 0);
 	tm->tm_min	= bcd2bin(timereg >> 8);
 	tm->tm_hour	= bcd2bin(timereg >> 16);
-
-	return rtc_valid_tm(tm);
 }
 
 static void nuc900_rtc_bin2bcd(struct device *dev, struct rtc_time *settm,
@@ -156,7 +154,9 @@ static int nuc900_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TLR);
 	clrval	= __raw_readl(rtc->rtc_reg + REG_RTC_CLR);
 
-	return nuc900_rtc_bcd2bin(timeval, clrval, tm);
+	nuc900_rtc_bcd2bin(timeval, clrval, tm);
+
+	return 0;
 }
 
 static int nuc900_rtc_set_time(struct device *dev, struct rtc_time *tm)
@@ -189,7 +189,9 @@ static int nuc900_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
 	timeval = __raw_readl(rtc->rtc_reg + REG_RTC_TAR);
 	carval	= __raw_readl(rtc->rtc_reg + REG_RTC_CAR);
 
-	return nuc900_rtc_bcd2bin(timeval, carval, &alrm->time);
+	nuc900_rtc_bcd2bin(timeval, carval, &alrm->time);
+
+	return rtc_valid_tm(&alrm->time);
 }
 
 static int nuc900_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
-- 
2.16.1