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
[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
+ O& I, G5 H7 o" F[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
7 a/ t# i9 r/ X' P" I1 c" W" u* T[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
; }; G# T/ u: t% e! P[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
# S( C5 K5 B& ^# {/ w; x[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
. i7 S, d2 ^( B0 u* s8 Q( z" H6 f. F' _[    1.790613] ads7846 spi1.1: touchscreen, irq 145
% X5 E5 T( ?6 _. l  `/ F% P[    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
% i% K& w: L- a1 |/ `  q, o[    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
% Q) V- z4 X8 J/ e[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
- [- E7 g# d8 p' Q3 a( Z' H3 l[    1.856796] IR Sony protocol handler initialized
: Z1 Z* K/ z4 G3 C  }2 t# E[    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
6 a- `6 l  s0 ^6 Y[    1.882369] Linux video capture interface: v2.00
7 J7 H3 l+ }1 K3 m7 i[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
& B2 w# l! `0 `. N[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
& Q; w+ ^; x% M5 @( Q# N[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
  B+ _" R$ q# f- V[    1.946844] netconsole: network logging started
[    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)
[    1.981557] Root-NFS: no NFS server address
[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
$ y* R" {. O4 `' @: M2 \+ g; i[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
7 {' X, c# a8 H# @' ][    2.000512] Please append a correct "root=" boot option; here are the available partitions:
* E. ^! b  T! o) `+ [[    2.009218] 1f00             128 mtdblock0  (driver?)
( V5 p2 o" f) k) n  H8 T) R[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
6 k- p7 N$ q8 g6 q* c% _& I& Z[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
0 b# Y+ M* X6 J4 U4 c0 a! q# _4 J[    2.041536] 1f06             512 mtdblock6  (driver?)
$ {  q$ W' A* A8 n, h4 l[    2.046904] 1f07              64 mtdblock7
$ k7 I; r7 l: ?+ \+ i# }. |: h[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
0 P/ ]7 [6 C+ {6 i% G5 _0 c[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
$ e& W) C; S/ o[    2.071638] mmc0: new high speed SDHC card at address 1234
[    2.077485]  (driver?)
2 g  y% a" G8 |5 Q8 z; Z[    2.079916] 1f0a              64 mtdblock10  (driver?)
* ^: I8 J+ o6 r' K[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
  G$ p+ w! b% T6 l                                                                                                                                          
1 b! H- l: l+ K) W; U  Z! T然后串口就没有反应了，紧急求助
( ^9 T. z4 t$ C/ B- B3 C7 ?1 i

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
5 k% S5 r* k4 k# T% l( H( x6 J; d[    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。
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