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
[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
  X6 H) D/ o' {[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
2 g% }3 Q- U2 z  Q5 w$ e[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
$ l6 w1 X2 j$ o# |7 R7 Z7 t[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
# f+ W0 s9 g5 g3 i; L6 S3 U[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
[    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
: E  A% |  O. l' b) J3 K; V  ]2 u% D" J[    1.818481] omap_rtc: RTC power up reset detected
[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
7 Y* B1 Q, U& I- V# E- p[    1.847554] IR RC6 protocol handler initialized
0 G7 I5 @3 z' g+ z8 r0 A[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
9 t( i* V5 H7 k: K+ Y! G  b/ O[    1.861480] IR RC5 (streamzap) protocol handler initialized
. y, t% y  N' a$ K5 E* Y3 g3 q[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
6 n0 `  T/ \# |0 l* Z1 e[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
  H8 T+ ^! N* A" e) y% H! ]# B[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
) T! Z  Y0 b; a6 v& _6 u( O[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
; y" \5 m5 s; }! C2 P! Q3 M[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
& C) d" V! D8 J4 L( |[    1.981557] Root-NFS: no NFS server address
9 W9 d: K8 P# e( P: \! M( B- i[    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)
[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
1 j+ ^" ]" W6 P( c1 K  `! L( }4 E5 Z. o[    2.009218] 1f00             128 mtdblock0  (driver?)
# ]. L4 F1 L  m' y- f5 u: W6 I[    2.014571] 1f01             512 mtdblock1  (driver?)
; i' E" w/ m5 W3 t( K[    2.020016] 1f02             512 mtdblock2  (driver?)
3 O8 S1 `0 s' `+ I# W! J2 k. ?' m; D[    2.025353] 1f03            4096 mtdblock3  (driver?)
& k' H4 ^( u* {! O0 {[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
, u: Y/ K/ \. A) q- N- m[    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?)
. v, i% p& E# z8 v[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
1 X3 d1 F0 ]6 g" `[    2.071638] mmc0: new high speed SDHC card at address 1234
- N- l8 w5 r5 a" `[    2.077485]  (driver?)
% I4 d* Y$ X% Q3 b2 D. h8 V[    2.079916] 1f0a              64 mtdblock10  (driver?)
/ \5 W8 m9 n5 Q+ I1 D2 s: Y[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
7 Y- _0 E- t; o4 Q1 H                                                                                                                                          
然后串口就没有反应了，紧急求助

. Y$ N* h4 {+ }' [

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
+ X" r1 {( c; W# G  `& M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。
+ R, e% R8 j9 a7 T4 l  f$ {