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
, B8 d# Q* }9 H$ S" d& O" G! i[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
* C% F( M8 v9 N: y0 w[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
8 A. [! \% |" f& t0 C1 f5 b[    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
/ O3 r6 ^! E" z[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
" y" y5 ?$ [; l. z) h" s7 M! o& y1 O[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
0 g, \" J* B9 d% t* F+ ]/ r" T[    1.818481] omap_rtc: RTC power up reset detected
[    1.824103] i2c /dev entries driver
1 }) S/ Y4 W2 ?. g4 X; ^" K0 D& Z[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
- ~7 x. q* M# k) _: |: W' s[    1.852136] IR JVC protocol handler initialized
8 [( y) H0 D& \! B) O4 t[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
5 H; w* J. W- [' @[    1.877882] IR LIRC bridge handler initialized
- ?2 m6 M$ V3 r* d. T7 H+ u[    1.882369] Linux video capture interface: v2.00
6 b# Q& X) f9 z[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
& ]! _7 P$ ]# j1 K[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
( T( Q# q% I1 _; }0 K2 [1 Z[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
. W3 }! y- d" e; r9 b# o" f7 q% H[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
2 B7 ^8 x6 p3 T4 x0 w5 b" @[    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
0 L0 [6 L2 I6 G4 O; t[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
2 B2 D* e1 c$ G/ y[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
7 V8 M+ i  l' v  _4 Z[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
' [. {/ B& @: I7 B% d8 r8 T[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
0 l: Q9 y+ W' E: r6 K[    2.025353] 1f03            4096 mtdblock3  (driver?)
+ R" k* L7 R, z' q[    2.030825] 1f04          519040 mtdblock4  (driver?)
, Y) O$ N4 q* h0 f7 I% u3 w% G[    2.036225] 1f05              64 mtdblock5  (driver?)
[    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.
2 g/ Z2 s2 o% ^3 t/ `6 P[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
& b9 V  ~3 P* a; a! Q: J[    2.071638] mmc0: new high speed SDHC card at address 1234
3 p2 L! r9 L# K; b/ t[    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)
6 o$ V" u# `) j$ K4 u7 [                                                                                                                                          
然后串口就没有反应了，紧急求助
9 p( O+ K( `- I% U( y) Y  i

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
  A+ x4 h* {* U( Y" R[    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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