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
% x3 E$ G' y  s; @' u% m$ E[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
' {) M- O7 H0 S# W5 {3 h9 c: `8 f[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
1 M3 Y! U$ [& y6 c[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
/ I3 `; P" J7 X[    1.765823] davinci_mdio davinci_mdio.0: timed out waiting for user access
% c) }) ]# w) \* O[    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
" J8 G! A4 G) d) g) G7 I6 a3 A[    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
+ S& Q( S; _/ j! O# }$ W& `) n[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
8 w6 n* I8 T( x: C0 I4 ^& s7 I, R[    1.818481] omap_rtc: RTC power up reset detected
! T; D% L$ f2 `( k[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
2 V7 X/ _% U- _8 Z% \[    1.837971] IR NEC protocol handler initialized
[    1.842583] IR RC5(x) protocol handler initialized
8 d: ?8 Q" ]  t& E[    1.847554] IR RC6 protocol handler initialized
3 L6 Y+ b" p! Z7 g) q; d0 Y( }[    1.852136] IR JVC protocol handler initialized
: Y. K% a; d- P- r: B; l; F7 i[    1.856796] IR Sony protocol handler initialized
& n$ |: S9 G- v2 h4 E& v, S[    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
8 L) ^  R& k: U; }) s* b[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
, N# r5 [+ E( k  [, |2 ~[    1.895285] cpuidle: using governor ladder
' m  b* N- r# s+ d+ [2 r1 v[    1.900118] cpuidle: using governor menu
[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
) |6 f" q( c) ?9 E4 q5 [3 L[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
4 b0 g6 ?2 m; [' e4 z[    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
[    1.985997] VFS: Unable to mount root fs via NFS, trying floppy.
6 G0 s8 a6 U1 {9 O- C2 @4 C[    1.993259] VFS: Cannot open root device "mmcblk0p2" or unknown-block(2,0)
" i7 h* ^( {. v! O[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
0 @8 Q+ }# b9 y% N* j* d5 O[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
. v  G% D% h) w4 `# l[    2.030825] 1f04          519040 mtdblock4  (driver?)
[    2.036225] 1f05              64 mtdblock5  (driver?)
[    2.041536] 1f06             512 mtdblock6  (driver?)
[    2.046904] 1f07              64 mtdblock7
3 N/ p7 M6 r' w0 |- R[    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
5 e7 Z3 D3 \' q6 o) B  U2 x[    2.059503]  (driver?)
[    2.061933] 1f08            2560 mtdblock8  (driver?)
[    2.067289] 1f09            4096 mtdblock9
: g. g: Y3 A# a[    2.071638] mmc0: new high speed SDHC card at address 1234
  p+ T+ q& l3 B2 H& p' _3 O& E) D[    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

9 V. j4 B- o' s/ U# ]' }

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.059503]  (driver?)
% W+ J. E- A% h& r# z$ _& q) S' P5 e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。
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