From: Richard Leitner Date: Thu, 23 May 2019 13:54:49 +0200 Subject: [PATCH] rtc: s35390a: set uie_unsupported Origin: https://git.kernel.org/linus/c0e12848be091e8410fb427f080f2e0149123443 Bug-Debian: https://bugs.debian.org/932845 Alarms are only supported on a per minute basis. This is why uie_unsupported is set. Furthermore issue a warning when a second based alarm is requested. Signed-off-by: Richard Leitner Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-s35390a.c | 6 ++++++ 1 file changed, 6 insertions(+) Index: linux/drivers/rtc/rtc-s35390a.c =================================================================== --- linux.orig/drivers/rtc/rtc-s35390a.c +++ linux/drivers/rtc/rtc-s35390a.c @@ -288,6 +288,9 @@ static int s35390a_rtc_set_alarm(struct alm->time.tm_min, alm->time.tm_hour, alm->time.tm_mday, alm->time.tm_mon, alm->time.tm_year, alm->time.tm_wday); + if (alm->time.tm_sec != 0) + dev_warn(&client->dev, "Alarms are only supported on a per minute basis!\n"); + /* disable interrupt (which deasserts the irq line) */ err = s35390a_set_reg(s35390a, S35390A_CMD_STATUS2, &sts, sizeof(sts)); if (err < 0) @@ -502,6 +505,9 @@ static int s35390a_probe(struct i2c_clie goto exit_dummy; } + /* supports per-minute alarms only, therefore set uie_unsupported */ + s35390a->rtc->uie_unsupported = 1; + if (status1 & S35390A_FLAG_INT2) rtc_update_irq(s35390a->rtc, 1, RTC_AF);