cvs commit: src/sys/kern tty.c

[Tai-hwa Liang]

avatar      2005-04-13 13:56:17 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             tty.c 
  Log:
  According to the comment in struct tty, t_modem is optional; hence we should
  guard against NULL t_modem entry. Otherwise, driver doesn't have t_modem
  callback implemented(such like sys/dev/usb/ucycom.c) would panic when
  someone opens the driver's associated tty device.
  
  Reviewed by:    phk, sam (mentor)
  
  Revision  Changes    Path
  1.249     +4 -2      src/sys/kern/tty.c