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
0 r$ L. r- T+ v$ C8 ~+ O1 `; G5 ^[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
& {7 j- U2 [7 _  Q7 j2 m/ p+ j[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
& `* Z. I! z3 d5 [[    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
0 J0 F; N) A& K7 ]+ E[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.818481] omap_rtc: RTC power up reset detected
* l2 L3 E7 n$ r3 v) [[    1.824103] i2c /dev entries driver
5 e0 }$ ^* a4 _7 O' G[    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
0 k9 w: I: @: A: P2 k. p[    1.847554] IR RC6 protocol handler initialized
6 R1 e* U6 _* a8 ]. f: U[    1.852136] IR JVC protocol handler initialized
[    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
[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
3 y0 w) r8 c& P& H* I9 N[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
0 P8 {! i2 w+ s* ]1 D. C2 x[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
+ I3 h5 \* k5 _- w# a[    1.918396] TCP cubic registered
0 E" n1 U: I! O[    1.921694] NET: Registered protocol family 17
- s' M$ C4 k1 B* T[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
4 S, D% G: R/ w4 C  G  o[    1.942633] console [netcon0] enabled
8 G1 }3 F( F  D4 H+ X: c. x, h[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
8 p- T) F* I" {5 i[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
0 C& F, [- h2 T& V[    1.981557] Root-NFS: no NFS server address
% a9 o: n8 T: K$ _- Y[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
, W* M4 U; S2 s# j0 P[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
8 o9 e$ e3 g# c0 b2 C[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
! ?0 Y" V- ?8 F3 L8 c  ]5 E* |[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
8 i* ~# ?' l+ q+ O- S[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
/ I- \8 d( F7 _3 W$ [, r[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
  f! m# b& ?- l! m[    2.046904] 1f07              64 mtdblock7
0 G+ {3 j8 l8 N) Z[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
& q9 Q8 f+ p7 i, B+ H6 W[    2.059503]  (driver?)
7 i- R/ h( ]$ U# z[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
4 ]: B2 @* E) E. [[    2.071638] mmc0: new high speed SDHC card at address 1234
[    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)
                                                                                                                                          
8 P+ U! j0 u5 d+ U; `+ U然后串口就没有反应了，紧急求助

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    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。
: ~! V9 w; ~5 c( R