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 C% x! \8 I6 f$ n3 X0 x, _[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
1 x9 c2 W% E$ E, E7 d[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
# K# z7 x  M) n; `+ c% c! s" s  Z+ A[    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
[    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
0 ^2 x: w( f& B! G1 E[    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
( p/ Z% |) `: \! x7 T- B+ Q[    1.842583] IR RC5(x) protocol handler initialized
% i9 a5 L2 S- m2 l[    1.847554] IR RC6 protocol handler initialized
& H6 \. F- t7 c5 ?, G[    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
[    1.877882] IR LIRC bridge handler initialized
0 N9 x! Z  ]: x: x9 v# Y[    1.882369] Linux video capture interface: v2.00
9 a; V2 {8 p( z+ j/ M( M[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
1 Q" t1 t- t. n8 N- r4 |: Q[    1.900118] cpuidle: using governor menu
1 k! m. K: K; V+ R+ I2 T[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
' L  Q+ @4 O8 f( i. V! \3 b[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
* {; ?9 A! Y( S8 y8 w[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
0 K: K0 h/ z" T. Z[    1.942633] console [netcon0] enabled
# ^; c! S. T; }# Y[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
$ N4 S( F0 `0 [, S0 T[    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
0 U& @5 e; b. k+ H8 B[    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)
; j0 q$ g, M& K+ X2 R! k, q& s+ X[    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?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
" P0 X; U& j' P2 l[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
' Q  T. r0 d" S$ a7 l[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
! D; Z8 t- z% y1 C- n[    2.059503]  (driver?)
0 x7 n+ K: {! i3 O1 O8 f. y[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
) A2 y- M9 n1 c# G/ S" }3 [[    2.071638] mmc0: new high speed SDHC card at address 1234
[    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)
                                                                                                                                          
然后串口就没有反应了，紧急求助

( @& |* [6 O+ B+ ]# g9 S

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
2 e$ T* Y  A) o  J[    2.059503]  (driver?)
1 ?; r3 Q7 p1 x/ C7 _; ?0 m. i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。
* @8 ?) @: V* `9 P: T