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Posted to commits@nuttx.apache.org by GitBox <gi...@apache.org> on 2020/09/15 05:09:23 UTC

[GitHub] [incubator-nuttx] YuuichiNakamura opened a new pull request #1789: Fix cxd56 uart deadlock

YuuichiNakamura opened a new pull request #1789:
URL: https://github.com/apache/incubator-nuttx/pull/1789


   ## Summary
   - This commit fixes a deadlock problem in up_txint() for cxd56xx.
   - Because uart_xmitchars() called by up_txint() takes a lock by enter_critical_section(), taking a spinlock here can cause a deadlock.
   
   ## Impact
   - This commit affects the cxd56_serial driver in SMP mode only.
   
   ## Testing
   - Tested with spresense:smp
   


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[GitHub] [incubator-nuttx] masayuki2009 merged pull request #1789: Fix cxd56 uart deadlock

Posted by GitBox <gi...@apache.org>.
masayuki2009 merged pull request #1789:
URL: https://github.com/apache/incubator-nuttx/pull/1789


   


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[GitHub] [incubator-nuttx] YuuichiNakamura commented on pull request #1789: Fix cxd56 uart deadlock

Posted by GitBox <gi...@apache.org>.
YuuichiNakamura commented on pull request #1789:
URL: https://github.com/apache/incubator-nuttx/pull/1789#issuecomment-692467762


   @masayuki2009 


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[GitHub] [incubator-nuttx] masayuki2009 commented on pull request #1789: Fix cxd56 uart deadlock

Posted by GitBox <gi...@apache.org>.
masayuki2009 commented on pull request #1789:
URL: https://github.com/apache/incubator-nuttx/pull/1789#issuecomment-692475442


   @YuuichiNakamura 
   
   Thanks for the fix.
   LGTM.
   
   


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