cvs commit: src/sys/dev/twe twe.c twe_freebsd.c

[Scott Long]

scottl      2005-02-08 03:43:02 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/twe          twe.c twe_freebsd.c 
  Log:
  Fix crashdumps on twe.  The twe_immediate_request() path was not only
  copying data to a temporary buffer before the I/O, but also copying that
  temporary buffer back to the original data location after the I/O.  When
  you're dumping kernel heap and stack and protected pages, this is very
  very bad.
  
  A belated thanks to Robert Watson for donating hardware for this (and future)
  work.
  
  MFC after: 3 days
  
  Revision  Changes    Path
  1.24      +24 -9     src/sys/dev/twe/twe.c
  1.40      +1 -3      src/sys/dev/twe/twe_freebsd.c