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rtc: sun6i: let the core handle rtc range

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Let the rtc core check the date/time against the RTC range.

Tested-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Link: https://lore.kernel.org/r/20200330201226.860967-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Alexandre Belloni 2020-03-30 22:12:25 +02:00
parent 99b7ac9c68
commit 8ae79be79b
1 changed files with 10 additions and 15 deletions
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25
drivers/rtc/rtc-sun6i.c
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@ -108,7 +108,6 @@
* driver, even though it is somewhat limited.
*/
#define SUN6I_YEAR_MIN 1970
#define SUN6I_YEAR_MAX 2033
#define SUN6I_YEAR_OFF (SUN6I_YEAR_MIN - 1900)
/*
@ -569,14 +568,6 @@ static int sun6i_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
struct sun6i_rtc_dev *chip = dev_get_drvdata(dev);
u32 date = 0;
u32 time = 0;
int year;
year = rtc_tm->tm_year + 1900;
if (year < SUN6I_YEAR_MIN || year > SUN6I_YEAR_MAX) {
dev_err(dev, "rtc only supports year in range %d - %d\n",
SUN6I_YEAR_MIN, SUN6I_YEAR_MAX);
return -EINVAL;
}
rtc_tm->tm_year -= SUN6I_YEAR_OFF;
rtc_tm->tm_mon += 1;
@ -585,7 +576,7 @@ static int sun6i_rtc_settime(struct device *dev, struct rtc_time *rtc_tm)
SUN6I_DATE_SET_MON_VALUE(rtc_tm->tm_mon) |
SUN6I_DATE_SET_YEAR_VALUE(rtc_tm->tm_year);
if (is_leap_year(year))
if (is_leap_year(rtc_tm->tm_year + SUN6I_YEAR_MIN))
date |= SUN6I_LEAP_SET_VALUE(1);
time = SUN6I_TIME_SET_SEC_VALUE(rtc_tm->tm_sec) |
@ -726,12 +717,16 @@ static int sun6i_rtc_probe(struct platform_device *pdev)
device_init_wakeup(&pdev->dev, 1);
chip->rtc = devm_rtc_device_register(&pdev->dev, "rtc-sun6i",
&sun6i_rtc_ops, THIS_MODULE);
if (IS_ERR(chip->rtc)) {
dev_err(&pdev->dev, "unable to register device\n");
chip->rtc = devm_rtc_allocate_device(&pdev->dev);
if (IS_ERR(chip->rtc))
return PTR_ERR(chip->rtc);
}
chip->rtc->ops = &sun6i_rtc_ops;
chip->rtc->range_max = 2019686399LL; /* 2033-12-31 23:59:59 */
ret = rtc_register_device(chip->rtc);
if (ret)
return ret;
dev_info(&pdev->dev, "RTC enabled\n");