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From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Fri, 11 Dec 2009 03:08:07 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/puc puc.c
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marcel      2009-12-11 03:08:07 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/puc          puc.c 
  Log:
  SVN rev 200397 on 2009-12-11 03:08:07Z by marcel
  
  Fix interrupt handling. It started off broken and grew worse over time.
  The rewrite of the interrupt handler includes:
  o   loop until all pending interrupts are handled. This closes a
      race condition.
  o   count the number of interrupt sources we handled so that we can
      properly return FILTER_HANDLED or FILTER_STRAY when we break out
      of the loop.
  o   When matching the interrupt source to the devices that have that
      source pending, check only from the set of devices we found to
      have a pending interrupt.
  
  PR:             kern/140947
  MFC after:      3 days
  
  Revision  Changes    Path
  1.51      +62 -46    src/sys/dev/puc/puc.c