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
' o9 G6 a  p: l; w$ ~6 K5 D[    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
[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
" P- Z( [$ X, ~7 F5 a( g[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
: f/ D! R; q& Z$ m! Q1 L[    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
8 Z2 m; e( I" `: v3 K# W, _- N[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
/ C& g) w' C% ?1 u" m  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
4 C" W# k! K: o[    1.837971] IR NEC protocol handler initialized
# l2 y2 t# X' `( m[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
$ p" ~% `5 P7 k1 }+ [1 \. M[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
) E8 [( o1 i+ g[    1.867170] IR SANYO protocol handler initialized
* i/ @; K7 W* I4 \4 E[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
0 @7 L. l9 |  ^' Q! w+ I4 ~- j[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
% }# f0 ]) Y9 `% |5 p4 L4 U[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
4 @, U( @+ A7 B8 x[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
0 ?' g1 p0 _: e/ q, [[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
& R2 V3 O' V) J: p* c" V9 N: P[    1.942633] console [netcon0] enabled
[    1.946844] netconsole: network logging started
; n/ [: o' F3 v8 L/ e[    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)
7 h* v# j; d5 c6 Z: x7 K8 K8 e[    1.981557] Root-NFS: no NFS server address
. U8 C( _9 U+ j) L9 L3 h, E& z& ?, A[    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:
[    2.009218] 1f00             128 mtdblock0  (driver?)
* @0 u' n. Q; p. T8 \[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
4 n  k& ]* O  \# C* G[    2.030825] 1f04          519040 mtdblock4  (driver?)
: {6 A! E  m1 `$ ]7 _  ?$ D: L  L[    2.036225] 1f05              64 mtdblock5  (driver?)
. m& p+ u/ a- q6 _5 k6 d4 K[    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.
" Q7 U- [6 n$ \* N" N# g+ ^[    2.059503]  (driver?)
9 [7 i% S) C+ }+ ^. l* G[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
9 _, g) w& S/ p[    2.071638] mmc0: new high speed SDHC card at address 1234
[    2.077485]  (driver?)
6 @; S: }* Q- B[    2.079916] 1f0a              64 mtdblock10  (driver?)
: N! @0 ~9 W& K$ W6 f0 W[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
                                                                                                                                          
' {: t: ~6 J  O' r; I然后串口就没有反应了，紧急求助
3 ~9 \0 \' o! F) [1 E* j
6 W( O- @/ z) v  g9 J

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
  f, q8 D  V/ v9 B. n) e9 T[    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。
" Y  d. e+ S0 ?: K  T# {: U% ]