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
  G6 }+ L+ Y3 f[    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
[    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
) i9 ~' y5 d; ]" {) Z! X7 a! P[    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
[    1.818481] omap_rtc: RTC power up reset detected
4 U8 g+ O! l( l  O5 c9 o0 ][    1.824103] i2c /dev entries driver
! F6 U3 ]. A; m5 D" e7 c  x[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
" E5 B7 `$ Y0 _3 p: Y8 O[    1.837971] IR NEC protocol handler initialized
0 c: s0 ~/ a* `1 f[    1.842583] IR RC5(x) protocol handler initialized
' z0 i/ }' a  |2 a/ i- G) W[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
" O* f, E6 f, h: ~2 Q& @( q[    1.856796] IR Sony protocol handler initialized
8 u; g8 p" Q1 D[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
; ~' D. u, B; r[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
% _/ Q6 A" ?' F2 M[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
, {: Z% G3 a& N3 q. e1 |  X5 F# G& O[    1.918396] TCP cubic registered
$ F0 d8 y% t# ?2 s( r  u[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
3 a: j- E, E3 \% ?( Q[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
: o7 `$ `# X7 y+ ^, t  s[    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)
% W# R4 ?% j0 S3 H8 O( P[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
6 E% V* l! i1 _& i3 a[    2.009218] 1f00             128 mtdblock0  (driver?)
) I+ A8 I2 `0 o7 x[    2.014571] 1f01             512 mtdblock1  (driver?)
$ U1 h7 k2 _; I. A8 v% ^$ V[    2.020016] 1f02             512 mtdblock2  (driver?)
/ v  l; {  e% O0 Q- h7 r. w[    2.025353] 1f03            4096 mtdblock3  (driver?)
& V& b' K% x: G[    2.030825] 1f04          519040 mtdblock4  (driver?)
5 e- W2 f& `  D4 r% V1 I8 ~& E[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
' J1 a, P5 h# [[    2.046904] 1f07              64 mtdblock7
[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
4 T. v( T% l5 N" ~) ]  D3 z0 v0 q[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
/ e+ x8 q0 ^- @) x3 n[    2.071638] mmc0: new high speed SDHC card at address 1234
$ D) B( V/ Y' u- {: g[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
  J* {1 U$ q; h! T2 w. c                                                                                                                                          
然后串口就没有反应了，紧急求助
& [$ [7 H* [2 g7 ^  c3 q2 A

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
5 d3 r9 l+ ?% K3 y7 S% I[    2.059503]  (driver?)
$ g' G; \! x7 F8 T4 a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。
) b" M2 J2 _$ y$ `7 D/ }. g: ~