From 2b0386d578836b9cd5d2e63cff38b7229c319e4a Mon Sep 17 00:00:00 2001 From: Guenter Roeck <linux@roeck-us.net> Date: Thu, 17 Aug 2023 15:55:37 -0700 Subject: [PATCH] rtc: rzn1: Report maximum alarm limit to rtc core RZN1 only supports alarms up to one week in the future. Report the limit to the RTC core and use the reported limit to validate the requested alarm time when setting it. Cc: Brian Norris <briannorris@chromium.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/r/20230817225537.4053865-8-linux@roeck-us.net Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> --- drivers/rtc/rtc-rzn1.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index 6f98969eedca3..56ebbd4d04814 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -227,7 +227,7 @@ static int rzn1_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) return ret; /* We cannot set alarms more than one week ahead */ - farest = rtc_tm_to_time64(&tm_now) + (7 * 86400); + farest = rtc_tm_to_time64(&tm_now) + rtc->rtcdev->alarm_offset_max; alarm = rtc_tm_to_time64(tm); if (time_after(alarm, farest)) return -ERANGE; @@ -351,6 +351,7 @@ static int rzn1_rtc_probe(struct platform_device *pdev) rtc->rtcdev->range_min = RTC_TIMESTAMP_BEGIN_2000; rtc->rtcdev->range_max = RTC_TIMESTAMP_END_2099; + rtc->rtcdev->alarm_offset_max = 7 * 86400; rtc->rtcdev->ops = &rzn1_rtc_ops; set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features); clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features); -- 2.30.2