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
% B0 t$ v* L# `7 o8 h3 H! J6 ~7 p[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
$ T0 `. O" z1 r. p7 W/ g9 x[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
& A- S. O  L/ M' D+ [) q[    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
  H4 j6 Q: f3 U6 ~) ]" u[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
, L2 K0 R& h& |# x[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
1 Q/ o- p1 N8 m. g" R# l" {[    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
; _/ b; S) N; @5 F+ E[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
6 z1 J' L  n( q9 @4 K0 T$ S[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
7 ]+ h. @  u: o6 M, q7 X[    1.861480] IR RC5 (streamzap) protocol handler initialized
3 j9 \+ v, x, W# {. f& _! t  p[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
( M/ `% A6 I- N8 [% R9 C0 `' X[    1.877882] IR LIRC bridge handler initialized
8 I- o# [1 |: ?! L[    1.882369] Linux video capture interface: v2.00
# S: ?, B( A( c3 n, A1 b[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
$ f- k1 b3 _8 i! i# ~* ]7 V[    1.900118] cpuidle: using governor menu
. h! a3 r+ y1 Y- o[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
1 P1 a9 }! i+ D& [[    1.918396] TCP cubic registered
/ B4 w; Y& B8 f3 w" P9 }* \( q, W; t[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
, Z1 C6 F$ M3 o  q& D* y1 @[    1.942633] console [netcon0] enabled
[    1.946844] netconsole: network logging started
8 Y) F' D% U) a! E/ A4 ]# X[    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)
( Y( i: r  v+ e( J4 V[    1.981557] Root-NFS: no NFS server address
3 n$ H) D9 Z4 Y[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
2 S& R2 D5 l( K( |9 m2 J; N- {[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
  K5 }8 W  F; \  S, t[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
* s; m; u; ]/ o8 n, y: N[    2.009218] 1f00             128 mtdblock0  (driver?)
/ s0 [* i+ p+ S) M0 w$ h$ Y[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
8 x% l- f+ {1 D# d2 }% r[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
. l4 P6 M6 M/ e9 G# [" N[    2.046904] 1f07              64 mtdblock7
[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
" {; {* C, A+ V) X$ X[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
; h5 Q6 d8 M1 f6 j' N- {1 u, k: v[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
% y$ N8 T! j0 d2 s[    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)
  l3 f: E, ^0 J  X                                                                                                                                          
然后串口就没有反应了，紧急求助
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teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
+ g$ p7 q- I- y8 K. c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。