linux-kernel - [PATCH 001/100] rtc: ds1511: let the core handle invalid time

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Message-Id: <20180221205635.31314-2-alexandre.belloni@bootlin.com>
Date:   Wed, 21 Feb 2018 21:54:56 +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 001/100] rtc: ds1511: let the core handle invalid time

Returning a valid time when the time is invalid is a bad practice, because
then userspace is not able to react on the information. Also, it doesn't
make sense to return epoch because it is already the default time.

Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
---
 drivers/rtc/rtc-ds1511.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/drivers/rtc/rtc-ds1511.c b/drivers/rtc/rtc-ds1511.c
index 5f55214db9f8..a7d5ca428d68 100644
--- a/drivers/rtc/rtc-ds1511.c
+++ b/drivers/rtc/rtc-ds1511.c
@@ -277,10 +277,6 @@ static int ds1511_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm)
 
 	rtc_tm->tm_mon--;
 
-	if (rtc_valid_tm(rtc_tm) < 0) {
-		dev_err(dev, "retrieved date/time is not valid.\n");
-		rtc_time_to_tm(0, rtc_tm);
-	}
 	return 0;
 }
 
-- 
2.16.1