From owner-cvs-all  Wed Jul  7 14:49:19 1999
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From: Bill Paul <wpaul@FreeBSD.org>
Date: Wed, 7 Jul 1999 14:49:16 -0700 (PDT)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/sys/pci if_xl.c
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wpaul       1999/07/07 14:49:16 PDT

  Modified files:
    sys/pci              if_xl.c 
  Log:
  Fix a potential race condition that can occur in xl_start(). If the NIC
  clears out the transmit queue and zeroes the downlist pointer register,
  but xl_txeof() isn't called before xl_start() tries to queue more packets,
  xl_start() will think that the DMA is still in progress and not update
  the downlist register again, thus causing packets to sit in the transmit
  queue forever.
  
  Patch provided by: Russell T Hunt <alaric@MIT.EDU>
  
  Revision  Changes    Path
  1.43      +5 -3      src/sys/pci/if_xl.c



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