From: Henrik.Carlqvist@deadspam.com   
      
   On Mon, 04 Apr 2022 21:17:57 -0300, Jim Diamond wrote:   
   > I've hunted around a bit, but don't see any obvious reasons for this. (I   
   > define "diffing the code of 5.15.19 with 5.15.27" as "not obvious".)   
   > /proc/acpi/wakeup is the same in both 5.15.19 and .27.   
      
   If you are willing to do the work, it might be easier to diff only   
   between the two kernel versions where this change happened, for example   
   between 5.15.23 and 5.15.24.   
      
   The quickest way to find where the change happened is to  do a binary   
   search for that point. Now you know that 5.15.19 work as before and   
   5.15.27 works at after. What about the version in the middle in between?   
   That would be 5.15.23. Once you have tested with kernel 5.15.23 you will   
   know if the next step is to search between 5.15.19 and 5.15.23 or between   
   5.15.23 and 5.15.27.   
      
   regards Henrik   
      
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