iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

rtc: mv: remove artificial limitation

Browse Source 
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>
This commit is contained in:
Alexandre Belloni 2018-03-08 23:32:51 +01:00
parent b3a5ac42ab
commit 844cba65bf
1 changed files with 0 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
drivers/rtc/rtc-mv.c
View File

@ -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);