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
9 Q/ _0 S" h* ?4 G6 \7 e7 [0 c; w[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
; ]8 }* [, }1 ?1 [1 C3 Q[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
; ?( X# H: D5 u! c1 {# j[    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
) p& _  L4 R* w; h. e[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
: [% L& \2 q4 @  T[    1.818481] omap_rtc: RTC power up reset detected
. U( ~+ r* C' B; K# `! b[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
9 R5 E" T( V) m[    1.837971] IR NEC protocol handler initialized
( C9 I: [9 ~/ A0 R( W8 d4 U- Y7 x  w[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
# U1 s$ a2 m, J! _; P" x[    1.856796] IR Sony protocol handler initialized
* |1 o( R3 z3 O[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
$ z0 k& G& U0 Z# k" E[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
6 F7 Z7 r8 n: V5 I- U/ m[    1.877882] IR LIRC bridge handler initialized
- y$ m; H4 t* {2 r[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
0 c, S8 k4 }7 c4 a& w, ?# f[    1.895285] cpuidle: using governor ladder
& y: d% V" z  S$ x% K4 z[    1.900118] cpuidle: using governor menu
% ]0 }9 f% B( b[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
2 \; D2 ?/ O, G6 x) z: G( o[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
, l! |0 L/ v: _% J2 e: x/ M[    1.942633] console [netcon0] enabled
  g1 t; u# ?$ }% x[    1.946844] netconsole: network logging started
5 Y; H/ C+ V1 e: r2 O[    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 }+ u( M! K& [2 J6 a[    1.981557] Root-NFS: no NFS server address
' M2 W2 d$ C4 r; Z. W4 V3 Q[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
( Z# T' J, D6 X& K; b: y[    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?)
) \; g2 `5 s0 k[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
6 T% z6 Z9 B+ C8 M3 i2 ~1 D[    2.030825] 1f04          519040 mtdblock4  (driver?)
' z. b1 g  D4 Q/ F[    2.036225] 1f05              64 mtdblock5  (driver?)
3 D/ I$ r3 T$ O) R- w9 C3 p[    2.041536] 1f06             512 mtdblock6  (driver?)
! h2 M  d  {# Y; S7 V/ H' ~3 x[    2.046904] 1f07              64 mtdblock7
4 V# @5 f1 B7 ?3 @: v/ A[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
5 {; S& O1 t" M% @9 c: j; W[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
( Y" [  ~4 C8 z+ J9 F8 l[    2.077485]  (driver?)
- e" C7 {1 D' h5 V[    2.079916] 1f0a              64 mtdblock10  (driver?)
5 S7 O' q7 X6 P$ s[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
& H* |, M! E- d9 v* Y  [                                                                                                                                          
然后串口就没有反应了，紧急求助

( z& B/ w. u5 S% L3 }$ m3 U. E

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
; |7 f7 T+ G5 d$ E  G' ?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。