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
" p! x8 e& y$ `; E[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
$ |' g2 w7 z* B1 C) N! D( x[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
" f5 Q9 Y7 e6 a, Y, A[    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
* s: a% y+ U1 }$ a  T7 q, I, p0 m[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
( v( K. n, Z1 B( @1 l! N$ `3 ~( }. z2 s[    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
) g4 @$ \0 h3 S% E[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.818481] omap_rtc: RTC power up reset detected
2 q. o! q* e" T1 k( P[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
, A3 I/ W* q6 @  D/ m% V& n  F% c$ f[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
$ U$ D5 |& P0 _7 [: U) ][    1.847554] IR RC6 protocol handler initialized
/ q5 A$ a( f8 @; U5 j6 N; M[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
7 S/ k& i4 F3 k' e  y[    1.877882] IR LIRC bridge handler initialized
8 @! k4 d( O8 W1 S/ ][    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
) f1 n8 [6 A+ r8 `+ B$ X& y[    1.895285] cpuidle: using governor ladder
; a4 e* f+ Q+ C' X) e8 N[    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
: y( ^$ H% w  S5 W9 `5 T/ M( p[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
* ~# M# e' c4 j: M5 P5 {[    1.942633] console [netcon0] enabled
[    1.946844] netconsole: network logging started
4 Z& M  k) `  c4 }, s5 k  i4 [6 k[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
' b6 w3 ?3 a7 G[    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.
6 z3 M. {9 {4 l8 R# x[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
+ n. l1 A1 m7 ], a" ^8 i[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
" V& T0 _3 v: `1 Y% m2 G/ ?[    2.025353] 1f03            4096 mtdblock3  (driver?)
0 x; @6 w$ {8 t2 `[    2.030825] 1f04          519040 mtdblock4  (driver?)
, g/ D  o9 u4 @[    2.036225] 1f05              64 mtdblock5  (driver?)
" D' y7 J8 ], d) Y1 b[    2.041536] 1f06             512 mtdblock6  (driver?)
' n, v5 I& F' C4 E2 L8 A[    2.046904] 1f07              64 mtdblock7
* c  N/ X, e* X$ b/ ]% K[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
, t2 x8 s. _2 C) c2 F( o/ ]. k. ][    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
6 t* h& `, K: p! Z) Y2 j[    2.071638] mmc0: new high speed SDHC card at address 1234
[    2.077485]  (driver?)
! u, j6 M; `& C, g[    2.079916] 1f0a              64 mtdblock10  (driver?)
[    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

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
) @# R7 l0 M6 G8 B/ V[    2.059503]  (driver?)
7 W$ R% g; J! o( t$ `: V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。
* I: M! d+ T& m* L" v, u* V8 |( R) C* s