1. 09 1月, 2012 32 次提交
  2. 05 1月, 2012 7 次提交
  3. 04 1月, 2012 1 次提交
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      Revert "rtc: Expire alarms after the time is set." · f423fc62
      Linus Torvalds 提交于
      This reverts commit 93b2ec01.
      
      The call to "schedule_work()" in rtc_initialize_alarm() happens too
      early, and can cause oopses at bootup
      
      Neil Brown explains why we do it:
      
        "If you set an alarm in the future, then shutdown and boot again after
         that time, then you will end up with a timer_queue node which is in
         the past.
      
         When this happens the queue gets stuck.  That entry-in-the-past won't
         get removed until and interrupt happens and an interrupt won't happen
         because the RTC only triggers an interrupt when the alarm is "now".
      
         So you'll find that e.g.  "hwclock" will always tell you that
         'select' timed out.
      
         So we force the interrupt work to happen at the start just in case."
      
      and has a patch that convert it to do things in-process rather than with
      the worker thread, but right now it's too late to play around with this,
      so we just revert the patch that caused problems for now.
      Reported-by: NSander Eikelenboom <linux@eikelenboom.it>
      Requested-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      Requested-by: NJohn Stultz <john.stultz@linaro.org>
      Cc: Neil Brown <neilb@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      f423fc62