无以太，wifi起不来了

我把网络模块给去掉了（物理硬件），内核软件还包含。
并加上wifi模块，然后wifi就起不来了，执行以下指令都出错。


# ifconfig eth0 up
error: SIOCGIFFLAGS (No such device)


#iwlist eth0 scanning
eth0      Interface doesn't support scanning.

/ # cat /proc/modules
<6>PPP generic driver version 2.4.2
<6>PPP Deflate Compression module registered
<6>PPP BSD Compression module registered
<6>dm9000 Ethernet Driver, V1.31
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: read wrong id 0x2b2a2928
<3>dm9000 dm9000.0: wrong id: 0x2b2a2928
<3>dm9000 dm9000.0: not found (-19).
<6>ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
<7>ohci_hcd: block sizes: ed 64 td 64

<7>s3c2410-ohci s3c2410-ohci: auto-stop root hub
<3>init: cannot open '/initlogo.rle'
<4>init (1): /proc/1/oom_adj is deprecated, please use /proc/1/oom_score_adj instead.
<6>enabling adb
<6>adb_open

<6>cfg80211: Calling CRDA to update world regulatory domain
<6>libertas_sdio: Libertas SDIO driver
<6>libertas_sdio: Copyright Pierre Ossman
<6>usbcore: registered new interface driver ath9k_hif_usb
<6>usbcore: registered new interface driver rt73usb
<6>usbcore: registered new interface driver rt2800usb
<6>usbcore: registered new interface driver zd1211rw
<6>request_suspend_state: wakeup (3->0) at 36028958077 (2000-01-01 00:00:32.801613309 UTC)

/ # wpa_supplicant -Dwext -iwlan0 -c /etc/wifi/wpa_supplicant.conf
ioctl[SIOCGIFFLAGS]: No such device
Could not set interface 'wlan0' UP
ioctl[SIOCSIWPMKSA]: No such device
ioctl[SIOCSIWMODE]: No such device
Could not configure driver to use managed mode
ioctl[SIOCGIWRANGE]: No such device
ioctl[SIOCGIFINDEX]: No such device
ioctl[SIOCSIWENCODEEXT]: No such device
ioctl[SIOCSIWENCODE]: No such device
ioctl[SIOCSIWENCODEEXT]: No such device
ioctl[SIOCSIWENCODE]: No such device
ioctl[SIOCSIWENCODEEXT]: No such device
ioctl[SIOCSIWENCODE]: No such device
ioctl[SIOCSIWENCODEEXT]: No such device
ioctl[SIOCSIWENCODE]: No such device
ioctl[SIOCSIWAP]: No such device
ioctl[SIOCGIFFLAGS]: No such device