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

[Robert Watson]

rwatson     2005-02-12 15:38:09 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_5)
    sys/dev/sio          sio.c 
  Log:
  Merge sio.c:1.457 and sio.c:1.458 from HEAD to RELENG_5:
  
    date: 2005/02/03 10:35:05;  author: rwatson;  state: Exp;  lines: +9 -5
    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.
  
    date: 2005/02/08 17:56:04;  author: rwatson;  state: Exp;  lines: +5 -9
    Simplify the "and if we're in the debugger, don't use locks" logic,
    correcting some misthinking.
  
    Discussed with (really this time):      bde
  
  Revision   Changes    Path
  1.450.2.1  +1 -1      src/sys/dev/sio/sio.c