cvs commit: src/sys/dev/sio sio.c

Robert Watson rwatson at
Thu Feb 3 02:35:06 PST 2005

rwatson     2005-02-03 10:35:05 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/sio          sio.c 
  When entering siocnputc() with (kdb_active), don't acquire (or
  release) the sio spin mutex, as use of synchronization primitives in
  the debugger can result in substantial problems.  With this patch in
  place entering the debugger via a serial console is made
  substantially more reliable.
  MFC after:      1 week
  Tested by:      kris
  Discussed with: bde
  Revision  Changes    Path
  1.457     +9 -5      src/sys/dev/sio/sio.c

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