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Commit 844cba65 authored by Alexandre Belloni's avatar Alexandre Belloni
Browse files

rtc: mv: remove artificial limitation 



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: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent b3a5ac42

drivers/rtc/rtc-mv.c

+0 −12
Original line number Diff line number Diff line
@@ -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);