[v1] rtc: fix race condition between uie enable and rtc set time

[RFC PATCH 0/2] rtc: fix race condition between uie enable and rtc set time

Yu Liao posted 2 patches 3 years, 5 months ago

Diff against v1
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There is a newer version of this series

drivers/rtc/interface.c | 43 ++++++++++++++++++++++++-----------------
1 file changed, 25 insertions(+), 18 deletions(-)

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[RFC PATCH 0/2] rtc: fix race condition between uie enable and rtc set time

Posted by Yu Liao 3 years, 5 months ago

The patch series fixes two issues in rtc_set_time caused by race
conditions:
- rtc_timer_do_work will loop for a while when setting rtc time in the
  future with uie enabled.
- RTC_UIE_OFF does not work when RTC_UIE_OFF and RTC_SET_TIME are
  running in parallel.

Patch #1 extracts lockless version from rtc_update_irq_enable, and
patch #2 addresses the race condition issue.

Yu Liao (2):
  rtc: add lockless rtc_update_irq_enable
  rtc: fix race condition in rtc_set_time()

 drivers/rtc/interface.c | 43 ++++++++++++++++++++++++-----------------
 1 file changed, 25 insertions(+), 18 deletions(-)

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2.25.1