[PR] stm32h7:Serial refactor out tx dma semaphore [nuttx]

["davids5 (via GitHub)" <gi...@apache.org>]

davids5 opened a new pull request, #11323:
URL: https://github.com/apache/nuttx/pull/11323

      Fixes is stuttering output.
   
      The use of the semaphore was causing blocking
      on non blocking callers. This ensured that
      the TX DAM would be restated, but when it
      was switched to trywait in 660ac6, it left
      data in the xmit queue unsent.
   
      This solution removes the semaphore and restart
      the DMA on completion if there is more data in
      the xmit queue to be sent.
   
   ## Summary
   
   ## Impact
   
   ## Testing
   
   


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Re: [PR] stm32h7:Serial refactor out tx dma semaphore [nuttx]

["xiaoxiang781216 (via GitHub)" <gi...@apache.org>]

xiaoxiang781216 merged PR #11323:
URL: https://github.com/apache/nuttx/pull/11323


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