/dev/tty: No such device or address

我在按照天嵌文档做linux移植的时候出现下列问题，不知道是什么原因引起的。
NET: Registered protocol family 17
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
end_request: I/O error, dev mtdblock2, sector 256
isofs_fill_super: bread failed, dev=mtdblock2, iso_blknum=64, block=128
yaffs: dev is 32505858 name is "mtdblock2"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.2, "mtdblock2"
yaffs: auto selecting yaffs2
block 704 is bad
block 1274 is bad
block 1609 is bad
yaffs_read_super: isCheckpointed 0
VFS: Mounted root (yaffs filesystem) on device 31:2.
Freeing init memory: 112K
/dev/tty: No such device or address
Kernel panic - not syncing: Attempted to kill init!
Backtrace:
[<c0029034>] (dump_backtrace+0x0/0x10c) from [<c027ed68>] (dump_stack+0x18/0x1c)
r7:c381a000 r6:c0367f60 r5:0009685c r4:00000200
[<c027ed50>] (dump_stack+0x0/0x1c) from [<c027edb8>] (panic+0x4c/0x124)
[<c027ed6c>] (panic+0x0/0x124) from [<c0048704>] (do_exit+0x520/0x620)
r3:c0351ad0 r2:c381df30 r1:c381de04 r0:c0301b7c
[<c00481e4>] (do_exit+0x0/0x620) from [<c0048848>] (do_group_exit+0x44/0xc4)
[<c0048804>] (do_group_exit+0x0/0xc4) from [<c00488e0>] (sys_exit_group+0x18/0x24)
r5:0009685c r4:00096880
[<c00488c8>] (sys_exit_group+0x0/0x24) from [<c0024e60>] (ret_fast_syscall+0x0/0x2c)

你是不是在文件系统里面调用了tty相关的设备啊？