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
" t6 Q/ E5 K! u% k; E[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
6 g/ p% G+ f& X1 s( E4 x[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
! l/ c" _, \* K7 [3 [[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
& P- Q( V! r9 G[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
. j3 @. S3 \5 B: K' v: f[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
  u$ F7 J2 x; r$ Y( {+ F[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
[    1.790613] ads7846 spi1.1: touchscreen, irq 145
- Q: ?8 j3 f7 a; K" ][    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
8 E$ l$ {# m2 Y9 g! O[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.818481] omap_rtc: RTC power up reset detected
) q5 D) |) I+ l1 B6 o! C' M" x[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
[    1.837971] IR NEC protocol handler initialized
& Y, V. w3 s3 x+ f2 e[    1.842583] IR RC5(x) protocol handler initialized
1 B/ {' `$ B3 I4 R[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
7 ]4 l, Y$ h! h4 L8 \" z# T[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
% W" l7 T. L2 c9 A% r' j! a* _4 H[    1.877882] IR LIRC bridge handler initialized
& k, A8 O3 U) ?8 c5 Y) _( c+ ?[    1.882369] Linux video capture interface: v2.00
  x5 M) T5 j: x- h6 [[    1.888722] watchdog watchdog: heartbeat 60 sec
# \0 u7 {) |* x5 m; W[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
- v9 r6 h$ M2 X; q: a5 ^[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
+ j, [) h2 D2 O, f3 l[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
+ W. P% M  t$ \# T. w+ Y5 M[    1.942633] console [netcon0] enabled
5 a- g- W  Q; U# F( u; G) n[    1.946844] netconsole: network logging started
5 B" }7 f$ P& Z6 \  y5 ]0 I3 L[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
8 p3 k4 P) P7 P$ k( |' Y: h[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
( m! U  E. k, D3 `6 \# L[    1.981557] Root-NFS: no NFS server address
5 Z" t; j' W9 t) f2 g4 k[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
1 w9 |8 i% ^, }$ f7 X[    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:
+ D- D9 m7 L; f5 k+ ^  Z. X[    2.009218] 1f00             128 mtdblock0  (driver?)
* S: L6 ]  v, o( h1 {) C[    2.014571] 1f01             512 mtdblock1  (driver?)
; N$ ^% p. T8 j/ |[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
4 M9 W" ], W- Z: j1 w[    2.030825] 1f04          519040 mtdblock4  (driver?)
  J9 T+ \$ n4 e' P$ g' Y[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
9 f* M/ c4 W! H5 Q[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
( b- T6 V; m( h2 R, O; t( m[    2.059503]  (driver?)
# \2 O* A/ ~/ D  g[    2.061933] 1f08            2560 mtdblock8  (driver?)
" x# y- W; ~+ o[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
  Y! l3 A9 P5 \) v[    2.077485]  (driver?)
) }* C1 p/ \/ B9 Y[    2.079916] 1f0a              64 mtdblock10  (driver?)
7 l5 V, M" k) ~[    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

  l( E2 W8 D0 j' q/ a" |( M5 B

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
" H% H" d" J  r6 |[    2.059503]  (driver?)
% A3 v( W3 y, T) ~6 t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。