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
  Z; y. B4 A) j  l' n; L[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
. I- r+ r, m' ^* X" v: t- u[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
$ H: V( B3 N$ o[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
5 `& r/ q" N" M+ ^7 E9 o[    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
  I( A* r7 K. w8 p! x[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
, _' \3 M4 Q+ ~[    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
6 k2 p0 x* n: M# l. G5 u[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
$ U, K7 g+ ^3 T4 x[    1.852136] IR JVC protocol handler initialized
1 m8 k9 V  ^% y  _[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
7 Z  r) @$ r" F/ ?7 C; t[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
' V1 G0 x2 c* |1 J" U% J[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
; ?. ]4 }. z# V2 s" m7 P[    1.895285] cpuidle: using governor ladder
/ c' j7 q5 p$ k$ k+ m[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
6 X; g; d4 J" U+ _[    1.942633] console [netcon0] enabled
[    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
6 z; Z  ~( J: d1 n[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
. m6 N, C( D# W; C, N[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
* E/ j) l/ B4 }' P( N[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
2 q; V) J/ v( S[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
0 B+ M9 [% Q/ f. B* v. l& o- F" J[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
# @( \5 W2 i% s[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
4 W/ s& T' c1 |( Y& D3 g+ n' C[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
# m  O. }+ g7 i[    2.067289] 1f09            4096 mtdblock9
7 j" m- P- _  X+ O; n. I[    2.071638] mmc0: new high speed SDHC card at address 1234
+ V0 _) F! [2 d+ E2 p# ^[    2.077485]  (driver?)
" E+ V8 R+ p; p8 _/ r[    2.079916] 1f0a              64 mtdblock10  (driver?)
[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
! R" K2 h6 X6 v: I8 N+ W5 r                                                                                                                                          
然后串口就没有反应了，紧急求助
- d' Q' \. g% f+ I9 y: F

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
2 p4 S& z) v) J9 y( G8 p. O' N[    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。