'open' and 'close' were already empty. 't1xxp_shutdown' only cleared DAHDI_FLAGBIT_RUNNING which is already done in dahdi-base.c after calling shutdown. git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9318 a0bf4364-ded3-4de4-8d8a-66a801d63aff