K 10
svn:author
V 6
avatar
K 8
svn:date
V 27
2005-04-13T13:56:17.000000Z
K 7
svn:log
V 302
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)

END