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
# {  o# O  I* |+ Y$ j$ O[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    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
0 V5 @+ a6 ^3 g8 w[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
[    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
- s9 H. p' F9 T; D9 s1 b[    1.818481] omap_rtc: RTC power up reset detected
[    1.824103] i2c /dev entries driver
3 r$ D& O6 x6 |; Z[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
[    1.837971] IR NEC protocol handler initialized
9 Z- O; `/ A- A/ S" J[    1.842583] IR RC5(x) protocol handler initialized
5 F6 X/ a' a( p- w8 b* [[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
3 y0 c+ ~* H- W) v7 e[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
! m! [" K: O  _0 U5 L[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
$ O. W# `" r$ f; W[    1.877882] IR LIRC bridge handler initialized
& s0 @9 ]+ j5 p0 c( q) w5 K1 _) v2 v2 G[    1.882369] Linux video capture interface: v2.00
) ?& y$ N9 g( c+ [1 g0 f[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
# W* N; f* q4 Y1 T- M[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
- |, C4 z5 T5 ?$ `' G# |& k[    1.918396] TCP cubic registered
. M/ x3 X. A4 |[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
& e: g5 y+ J3 E6 Q[    1.942633] console [netcon0] enabled
[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
  s) {2 E  l% J# @0 Z9 T8 Z[    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
. T* B& O  d6 m" m/ R" Z[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
- m5 m! P) x. d) y5 {# m3 k1 l[    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:
# q2 q7 ~! |9 s[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
+ S( h- }# \- `! @/ D; E( y[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
3 b6 y" k' @) d/ l2 Z4 ~5 q[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
% \# j" ]9 p' Q3 B& y5 Y[    2.059503]  (driver?)
- S3 G* L0 @  D" |( k5 W8 t. z' B[    2.061933] 1f08            2560 mtdblock8  (driver?)
5 Y, ]6 b8 Q2 A6 y/ c[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
" ]& O, P$ {3 I/ l7 D4 T: M9 X2 z[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
2 x2 F3 F( \1 q[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
                                                                                                                                          
然后串口就没有反应了，紧急求助
& |5 [3 S0 ?- Y6 p1 @0 ~+ b7 g  Z/ w
  z- d7 ^  x4 ]- G4 P: A5 c6 u

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
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。