diff options
| author | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-02-14 23:27:53 +0100 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-02-22 12:32:05 +0100 |
| commit | a783c962619271a8b905efad1d89adfec11ae0c8 (patch) | |
| tree | 2b51d546f0d83490d948907c13528fb63d142e85 /drivers/rtc | |
| parent | 2d433e9c897dcb0b70ef17b536f61430b1e151d4 (diff) | |
| download | linux-a783c962619271a8b905efad1d89adfec11ae0c8.tar.gz linux-a783c962619271a8b905efad1d89adfec11ae0c8.tar.bz2 linux-a783c962619271a8b905efad1d89adfec11ae0c8.zip | |
rtc: allow rtc_read_alarm without read_alarm callback
.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.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/interface.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rtc/interface.c b/drivers/rtc/interface.c index 7c30cb3c764d..499d89150afc 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)); |