关机流程

#0  0xc02d8fcc in gx3211_demux_cleanup ()
#1  0xc027b652 in gxav_device_close ()
#2  0xc027a2bc in gxav_close ()
#3  0x9004010c in __fput ()
#4  0x900401aa in fput ()
#5  0x9003d886 in filp_close ()
#6  0x9000d8c8 in put_files_struct ()
#7  0x9000d992 in exit_files ()
#8  0x9000db6e in do_exit ()
#9  0x9000e3f0 in do_group_exit ()
#10 0x90014ad8 in get_signal_to_deliver ()
#11 0x90000e1c in do_signal ()
#12 0x90002ae6 in do_notify_resume ()
#13 0x900008f4 in exit_work ()