From: Guenter Roeck Date: Thu, 17 Aug 2023 22:55:37 +0000 (-0700) Subject: rtc: rzn1: Report maximum alarm limit to rtc core X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=2b0386d578836b9cd5d2e63cff38b7229c319e4a;p=linux.git 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 Signed-off-by: Guenter Roeck Reviewed-by: Miquel Raynal Link: https://lore.kernel.org/r/20230817225537.4053865-8-linux@roeck-us.net Signed-off-by: Alexandre Belloni --- 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);