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
+ N  w; r$ s, i# S" G1 A[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
. U2 O2 T0 C0 d/ F" R" Y* K1 q[    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
' s0 {: u7 S8 o8 m8 `$ H- |& ~9 s[    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
  N" v/ k& y9 o& @6 B6 N# G- I[    1.790613] ads7846 spi1.1: touchscreen, irq 145
6 B" N6 `0 I! @' D' p[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
- D8 u3 q( y  W+ m& L  I2 E. q[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.818481] omap_rtc: RTC power up reset detected
4 N; q; u8 |3 b) n/ S6 S[    1.824103] i2c /dev entries driver
' l; ?" ]8 y, U1 l. x! K. W[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
: \7 y4 R5 G  [1 [8 e' y2 |[    1.837971] IR NEC protocol handler initialized
, K$ t1 w9 f2 m' U[    1.842583] IR RC5(x) protocol handler initialized
4 F! S  l9 g  s. S[    1.847554] IR RC6 protocol handler initialized
$ w  E8 T0 Z4 b; n[    1.852136] IR JVC protocol handler initialized
7 X! j* D4 E+ H7 S9 h# O% t( y[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
4 f8 x, i" A$ @$ @[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
[    1.877882] IR LIRC bridge handler initialized
; N/ I! k. m5 O3 F5 }, G[    1.882369] Linux video capture interface: v2.00
/ e5 L2 f3 v" e9 h9 O  N[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
9 c& Y  N1 I6 q! R6 Q2 N[    1.918396] TCP cubic registered
+ n  y6 A5 Q# u% h& U# m5 Q[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    1.942633] console [netcon0] enabled
: B0 w& b7 Z' S- p$ e5 n4 h[    1.946844] netconsole: network logging started
; _! ^. b5 ]- j) d, B' Q[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
$ G# F- b3 s0 j' {4 b( o; J0 U[    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
  O' R3 Z9 k1 R$ f[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
: h( J+ z9 p% \2 P+ [* _  C[    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:
' q, O0 q: D/ e1 [4 k[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
$ b: N0 ^) L3 j6 v7 u[    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.
[    2.059503]  (driver?)
3 `1 G' _6 A/ p1 w: f[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
+ Q/ V7 `+ j+ z+ K# B9 f7 n[    2.071638] mmc0: new high speed SDHC card at address 1234
8 M$ U9 s7 X9 K$ ~" L[    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 q+ U: w2 X( P- y; H# \& r& F  }( T                                                                                                                                          
然后串口就没有反应了，紧急求助

* g8 K# f. f4 V2 m

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
  p0 c4 E- H6 X- n# T[    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。