内核编译去掉USB驱动出现启动不了的问题

gaocaimary

启动现象如下
" G9 |( K9 z- a' N0 L[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
& n; X3 v3 ~  w+ w$ _& K: w" g0 X[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
2 B! w5 O2 F/ b5 h5 ^9 P7 T[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
# \' o& n* m+ V2 l0 T6 G[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
' u5 g6 p3 Y3 D, x& C- M[    1.790613] ads7846 spi1.1: touchscreen, irq 145
[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
* Y( ?1 Q; A: Z, j% m[    1.818481] omap_rtc: RTC power up reset detected
, S8 a6 f, R+ o8 r[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
[    1.837971] IR NEC protocol handler initialized
4 {2 \6 t6 s/ G# X[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
- d1 R1 m% C" q+ v; R[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
! a2 \1 c# }' N4 r: W, M[    1.861480] IR RC5 (streamzap) protocol handler initialized
* N0 {+ t# ?# N, H+ M5 ^[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
/ X+ F3 ^* [; F! A[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
7 _3 g3 Q2 g  P! i: M# ~[    1.888722] watchdog watchdog: heartbeat 60 sec
' N; l- x6 h; }3 `/ e& @[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
0 G$ _8 g2 i. @* i6 w[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
' P  c1 d8 D$ L- e[    1.946844] netconsole: network logging started
6 c" a/ B" t% E" s6 Z- j[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[    1.981557] Root-NFS: no NFS server address
[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
# s  n# t$ s, w; L" L! P[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
* B0 w: A& \# |) e, p+ Z  y[    2.009218] 1f00             128 mtdblock0  (driver?)
7 c" }  z: y: _) ]- E% V5 f) P) i) l[    2.014571] 1f01             512 mtdblock1  (driver?)
& y* H. Q# E! @# F0 u[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
9 ~+ T# J0 M. s7 l  S/ a# y0 P[    2.030825] 1f04          519040 mtdblock4  (driver?)
9 N+ M/ l, K4 c8 K- L. K[    2.036225] 1f05              64 mtdblock5  (driver?)
( q7 L' b  f4 `$ E; y" S[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
2 [% I7 m1 d! c+ s1 M[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
$ z* |) P7 N$ Z. |& i. S5 R[    2.071638] mmc0: new high speed SDHC card at address 1234
[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
" C& w; v- Q$ H0 D5 b[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
* o" |$ h* R& z& ?& m4 X, b8 K                                                                                                                                          
然后串口就没有反应了，紧急求助

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
; ~  T" M0 Y+ v9 X[    2.059503]  (driver?)
' B; Q) d( z9 A! C0 g/ ?您的问题，可能是sd的wp管脚被lock了，请检查一下sd卡，跟usb驱动应该无关的。