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
[    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
! E/ \7 a+ D6 Q& s- r! Q[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
" j0 X! i' D  V- ~8 w4 j[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
7 @4 p8 }/ p% N$ L" O" N& B[    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
: B% u# V$ J9 Y- i3 ~$ G0 Q[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
6 p5 L4 d( l( z[    1.818481] omap_rtc: RTC power up reset detected
[    1.824103] i2c /dev entries driver
& r6 ?& V, B4 \# B0 }' h[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
' o3 o0 n' P4 X7 T+ \1 r( q# X[    1.837971] IR NEC protocol handler initialized
# ^" i" n8 A1 U  i; j2 d3 k0 ]1 A[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
# v; c' i7 |5 S1 Y" v9 U[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
7 b% A$ {( v& z' e4 K[    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
4 B, E* K# e# h9 y, ^[    1.888722] watchdog watchdog: heartbeat 60 sec
$ L, D' |+ Z) F6 y[    1.895285] cpuidle: using governor ladder
$ [* L& |0 i! u# E[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
( V, |+ u4 j$ a  Y+ Z0 O5 U+ L+ x[    1.918396] TCP cubic registered
$ ~! y2 S& a2 `# K[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
[    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
9 ~1 \2 A4 l, q: T# H[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
0 ?9 L3 @6 p/ V0 S1 {) l[    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:
* ]  T9 \  f1 M4 }+ d' |[    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?)
& f: L2 J+ G& s; E[    2.036225] 1f05              64 mtdblock5  (driver?)
) R$ }3 e# W- [. v, u0 B5 b% u[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
1 B- x' Y6 [7 [5 g+ ^[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
/ X' Y+ B- u* ?" c  I+ j% j/ N[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
* D+ M- h# T8 p) K& r* p4 x[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
- |) D7 h. y3 G[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
1 r; e9 x. G  Y[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
- Y. p+ @, h2 }/ J, d7 \! T                                                                                                                                          
9 s3 d) p! X; z1 |  v0 x( o然后串口就没有反应了，紧急求助

8 z" R  D* B$ q+ G: s* |; O* r

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。