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
& l# @( B) Q6 T& a- ?5 T2 W[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
! T- O. x* f1 H/ c5 Z* a" J[    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
[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
4 O  B$ n$ E8 h[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
" H' G# Y! \& U' g0 R: I- @4 \[    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
[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
$ l# {  g) s; l% J+ e[    1.818481] omap_rtc: RTC power up reset detected
+ G( w* m# k6 ?[    1.824103] i2c /dev entries driver
[    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
[    1.852136] IR JVC protocol handler initialized
# L+ \7 g, M- ]! P! e[    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
2 G& v& t8 a8 C[    1.882369] Linux video capture interface: v2.00
3 Y# ?$ v- I1 d6 ?& I6 _  M[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
: }% j8 f% W5 v/ H1 Y[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
0 Q/ P7 K1 \& M9 F6 L[    1.921694] NET: Registered protocol family 17
5 D6 d( I! K. _) B/ V. ~[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
! z7 B$ \2 ]# `0 n+ l' ]4 V[    1.942633] console [netcon0] enabled
$ ]) I3 P+ y/ \) L2 L[    1.946844] netconsole: network logging started
0 i) s& E. R" K% U[    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
, q* M1 Z: V' b0 g& b, U[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
[    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:
( Z3 O" t1 Y3 x* e, X( |* L[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
& {" }# R+ ^6 x0 d[    2.025353] 1f03            4096 mtdblock3  (driver?)
% N6 w! A1 g9 U5 b4 U[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
! C2 J. Z5 p) V  g3 |[    2.041536] 1f06             512 mtdblock6  (driver?)
; C% Y9 |% ^' x( o+ N[    2.046904] 1f07              64 mtdblock7
: H; a: D* r: u4 L0 |6 E9 O' r[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
2 v2 {4 r- O% c1 v[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
; k5 G+ O1 i. H3 o[    2.071638] mmc0: new high speed SDHC card at address 1234
4 o2 }3 t2 e* o+ D8 q8 D* d& L! T[    2.077485]  (driver?)
; ?# U; L  _) ?0 ?[    2.079916] 1f0a              64 mtdblock10  (driver?)
[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
                                                                                                                                          
/ T; M# e0 p: w5 n3 a, X, b/ {然后串口就没有反应了，紧急求助

+ v$ g/ o0 S$ x$ l+ y

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
5 }! _" o# O' E! L: |0 E+ _! @[    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。