From: Alexandre Belloni alexandre.belloni@bootlin.com
[ Upstream commit a783c962619271a8b905efad1d89adfec11ae0c8 ]
.read_alarm is not necessary to read the current alarm because it is recorded in the aie_timer and so rtc_read_alarm() will never call rtc_read_alarm_internal() which is the only function calling the callback.
Reported-by: Zhipeng Wang zhipeng.wang_1@nxp.com Reported-by: Marcel Ziswiler marcel.ziswiler@toradex.com Fixes: 7ae41220ef58 ("rtc: introduce features bitfield") Tested-by: Philippe Schenker philippe.schenker@toradex.com Link: https://lore.kernel.org/r/20230214222754.582582-1-alexandre.belloni@bootlin.... Signed-off-by: Alexandre Belloni alexandre.belloni@bootlin.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/rtc/interface.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 9edd662c69ace..3d0fbc644f578 100644 --- a/drivers/rtc/interface.c +++ b/drivers/rtc/interface.c @@ -392,7 +392,7 @@ int rtc_read_alarm(struct rtc_device *rtc, struct rtc_wkalrm *alarm) return err; if (!rtc->ops) { err = -ENODEV; - } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features) || !rtc->ops->read_alarm) { + } else if (!test_bit(RTC_FEATURE_ALARM, rtc->features)) { err = -EINVAL; } else { memset(alarm, 0, sizeof(struct rtc_wkalrm));