diff mbox series

[2/6] rtc: mv: remove artificial limitation

Message ID 20180319234817.16199-2-alexandre.belloni@bootlin.com
State Accepted
Headers show
Series [1/6] rtc: hctosys: Ensure system time doesn't overflow time_t | expand

Commit Message

Alexandre Belloni March 19, 2018, 11:48 p.m. UTC 
Dates after 2038 actually fit on 32 bits. The counter will overflow in
2106. Also, it is bad practice to reset the RTC to a default value.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
---
 drivers/rtc/rtc-mv.c | 12 ------------
 1 file changed, 12 deletions(-)
diff mbox series

Patch

diff --git a/drivers/rtc/rtc-mv.c b/drivers/rtc/rtc-mv.c
index 944c5c0fadd0..bc52dbb0c0e2 100644
--- a/drivers/rtc/rtc-mv.c
+++ b/drivers/rtc/rtc-mv.c
@@ -223,7 +223,6 @@  static int __init mv_rtc_probe(struct platform_device *pdev)
 	struct resource *res;
 	struct rtc_plat_data *pdata;
 	u32 rtc_time;
-	u32 rtc_date;
 	int ret = 0;
 
 	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
@@ -259,17 +258,6 @@  static int __init mv_rtc_probe(struct platform_device *pdev)
 		}
 	}
 
-	/*
-	 * A date after January 19th, 2038 does not fit on 32 bits and
-	 * will confuse the kernel and userspace. Reset to a sane date
-	 * (January 1st, 2013) if we're after 2038.
-	 */
-	rtc_date = readl(pdata->ioaddr + RTC_DATE_REG_OFFS);
-	if (bcd2bin((rtc_date >> RTC_YEAR_OFFS) & 0xff) >= 38) {
-		dev_info(&pdev->dev, "invalid RTC date, resetting to January 1st, 2013\n");
-		writel(0x130101, pdata->ioaddr + RTC_DATE_REG_OFFS);
-	}
-
 	pdata->irq = platform_get_irq(pdev, 0);
 
 	platform_set_drvdata(pdev, pdata);