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
* R$ m; \6 ?8 e, }[    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
[    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
0 H+ w. s  _7 n, R+ ]  O[    1.790613] ads7846 spi1.1: touchscreen, irq 145
( X3 H& g- B- N4 G) r: t[    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
5 S$ {- B1 a& t: W7 s8 S[    1.818481] omap_rtc: RTC power up reset detected
  J( f5 W8 w6 j. H8 U# n* K+ U[    1.824103] i2c /dev entries driver
  u1 H: n2 @! c! g" w$ ?[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
2 o1 y) x+ G1 }& e5 W2 _[    1.837971] IR NEC protocol handler initialized
1 q' }/ I. m: r) F2 K$ a5 m4 w[    1.842583] IR RC5(x) protocol handler initialized
[    1.847554] IR RC6 protocol handler initialized
[    1.852136] IR JVC protocol handler initialized
5 l5 \5 ]$ m" d& o7 O[    1.856796] IR Sony protocol handler initialized
. f: G9 s+ g& d2 Z% w' h[    1.861480] IR RC5 (streamzap) protocol handler initialized
[    1.867170] IR SANYO protocol handler initialized
& }  x) ]* T( ]3 y1 h9 ~[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
[    1.877882] IR LIRC bridge handler initialized
, P; q( Z6 O; B% B$ g[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
[    1.895285] cpuidle: using governor ladder
0 N' I/ [7 O1 g  }% P# ~" S[    1.900118] cpuidle: using governor menu
- y1 T: I! N/ Y0 R+ M[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
% K2 u; S( S: x2 f* I9 o[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
' p7 `* A4 A6 R6 u5 ^[    1.942633] console [netcon0] enabled
7 |) W; {! X' V+ R- Y# B[    1.946844] netconsole: network logging started
" L5 P9 ^) w; X% X! z- v. Y7 h[    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)
! O8 C2 v" q. e  Q3 f" P7 t[    1.981557] Root-NFS: no NFS server address
[    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)
9 H$ p6 g2 Z; c0 T[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
& u5 Z( V- W- U! k* j" Y[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
& _. x; l! ]: b1 E. q& F[    2.020016] 1f02             512 mtdblock2  (driver?)
, u3 S) ~# z# u[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
1 j  K+ K, O" @5 n- }% ~8 w+ S[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
" g4 ]1 E' X6 _- j! g' n[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
9 `. X* R6 y0 \7 W  I7 @[    2.071638] mmc0: new high speed SDHC card at address 1234
! B6 f$ P$ r4 u[    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)
                                                                                                                                          
然后串口就没有反应了，紧急求助
; L2 q7 E  W: ~8 [" I, K; i' ?$ u9 U

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
0 `, s, z  ~8 J& ~[    2.059503]  (driver?)
) N: f  |8 L( G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。