rtc: pm8xxx: fix set-alarm race

Make sure to disable the alarm before updating the four alarm time
registers to avoid spurious alarms during the update.

Note that the disable needs to be done outside of the ctrl_reg_lock
section to prevent a racing alarm interrupt from disabling the newly set
alarm when the lock is released.

Fixes: 9a9a54ad7aa2 ("drivers/rtc: add support for Qualcomm PMIC8xxx RTC")
Cc: [email protected]      # 3.1
Signed-off-by: Johan Hovold <[email protected]>
Reviewed-by: David Collins <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>

0 files changed, 0 insertions, 0 deletions