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authorAlexandre Belloni <alexandre.belloni@bootlin.com>2023-02-15 01:27:53 +0300
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2023-02-22 14:32:05 +0300
commita783c962619271a8b905efad1d89adfec11ae0c8 (patch)
tree2b51d546f0d83490d948907c13528fb63d142e85 /drivers/rtc/interface.c
parent2d433e9c897dcb0b70ef17b536f61430b1e151d4 (diff)
downloadlinux-a783c962619271a8b905efad1d89adfec11ae0c8.tar.xz
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/interface.c')
-rw-r--r--drivers/rtc/interface.c2
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));