From: Alexandre Belloni <alexandre.belloni@bootlin.com>
To: linux-rtc@vger.kernel.org
Cc: linux-kernel@vger.kernel.org,
Alexandre Belloni <alexandre.belloni@bootlin.com>
Subject: [PATCH 2/2] rtc: ds1685: Add range
Date: Thu, 31 May 2018 11:56:43 +0200 [thread overview]
Message-ID: <20180531095643.8581-2-alexandre.belloni@bootlin.com> (raw)
In-Reply-To: <20180531095643.8581-1-alexandre.belloni@bootlin.com>
Useful range is 2000-2099 because leap year fails on centuries.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
drivers/rtc/rtc-ds1685.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/rtc/rtc-ds1685.c b/drivers/rtc/rtc-ds1685.c
index e6390475380f..5c0db6c8134c 100644
--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -2043,6 +2043,10 @@ ds1685_rtc_probe(struct platform_device *pdev)
rtc_dev->ops = &ds1685_rtc_ops;
+ /* Century bit is useless because leap year fails in 1900 and 2100 */
+ rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_2000;
+ rtc_dev->range_max = RTC_TIMESTAMP_END_2099;
+
/* Maximum periodic rate is 8192Hz (0.122070ms). */
rtc_dev->max_user_freq = RTC_MAX_USER_FREQ;
--
2.17.0
prev parent reply other threads:[~2018-05-31 9:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-31 9:56 [PATCH 1/2] rtc: ds1685: fix possible race condition Alexandre Belloni
2018-05-31 9:56 ` Alexandre Belloni [this message]
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