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
2 H8 R" x, s7 Z9 p# z" ?% x[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
2 @; o* z: P$ _3 P1 g+ J! D[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
( @- A/ r! Y4 M2 y) d[    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
( m) c+ R, W+ p6 f6 O[    1.773673] davinci_mdio: probe of davinci_mdio.0 failed with error -5
* m# |9 ]0 r: p. `5 ?% k[    1.782316] _regulator_get: spi1.1 supply vcc not found, using dummy regulator
( _" R! z  m3 F$ _+ I. g; Y  v[    1.790613] ads7846 spi1.1: touchscreen, irq 145
6 I& q1 c* d6 M. }& o+ C  D( m  T9 n[    1.796961] input: ADS7846 Touchscreen as /devices/platform/spi_davinci.1/spi_master/spi1/spi1.1/input/input0
, V0 K, ]7 P4 t5 f0 Q[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
$ \' ~, O# v/ u! |) x9 G[    1.818481] omap_rtc: RTC power up reset detected
5 ^8 p7 ]# T) ]' [9 d3 C[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
& F: B( G! `! x+ B8 C[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
% C  E9 I6 c5 d3 m5 Z9 C[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
3 s, d3 W/ o3 j& d/ P7 e0 g[    1.861480] IR RC5 (streamzap) protocol handler initialized
" b4 @" r5 U4 A! Z* _$ D- x[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
) W0 y/ |& c; p2 v$ b3 M9 Z: ^[    1.877882] IR LIRC bridge handler initialized
% g! r% d6 W0 y7 A9 k0 \[    1.882369] Linux video capture interface: v2.00
[    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
% S+ T9 j# G4 ]: l4 T[    1.918396] TCP cubic registered
# l4 g" O: L5 _' P0 _. p% r[    1.921694] NET: Registered protocol family 17
% a% @, _" D" Z( Z[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
; q, `: ~. i# a! U- N# Z) F[    1.942633] console [netcon0] enabled
. V4 A- }& a+ E' }[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
& G) s+ X5 U; d! E& I% B* x[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
! b! x4 o2 _+ o+ h+ x& L. d[    1.981557] Root-NFS: no NFS server address
4 l1 O3 R# l$ l) i& q0 R, |; ^7 D4 K[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
  J, ?- u1 O7 ]. |" \& k( ?[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
1 m- i9 Q, W$ M2 v% G[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
5 o+ h9 K; i5 `' ]  M4 f) T[    2.009218] 1f00             128 mtdblock0  (driver?)
+ H/ N/ Q. B# Q5 O7 C  J- g[    2.014571] 1f01             512 mtdblock1  (driver?)
$ w3 i! Z$ e  T% S; c[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
$ \2 \; i" G5 D  K' Q[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
2 S! z, W' h# [5 v. d! E[    2.046904] 1f07              64 mtdblock7
6 @$ }# ~  f, b+ p$ p9 X[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
  C. u) h' i+ Q1 I, w5 a8 W  ~[    2.067289] 1f09            4096 mtdblock9
[    2.071638] mmc0: new high speed SDHC card at address 1234
[    2.077485]  (driver?)
[    2.079916] 1f0a              64 mtdblock10  (driver?)
8 M- I9 d" S3 ?0 m[    2.085120] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
                                                                                                                                          
然后串口就没有反应了，紧急求助
6 t' \" A+ `. f- E
5 l( f6 T7 d5 \1 |/ ^9 o

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
; |& ]1 ?* `: e; }- s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。