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
/ z7 ?# o" @5 b% K[    1.601224] Read MAC addr from SPI Flash: ff:ff:ff:ff:ff:ff
# o6 `9 G1 {. ]* h" i' i' S[    1.608128] spi_davinci spi_davinci.1: Controller at 0xfef0e000
2 C0 ~% P4 o; k3 o[    1.665922] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5
. |- Q- [1 s# z- f5 H$ g[    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
/ N  Q3 b6 I* B4 s[    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
& R: ^$ H3 e( h7 B1 c4 Q! Q. K[    1.811665] omap_rtc omap_rtc: rtc core: registered omap_rtc as rtc0
[    1.818481] omap_rtc: RTC power up reset detected
. a7 z7 A) t% l+ A: G4 z1 @  }[    1.824103] i2c /dev entries driver
[    1.831084] lirc_dev: IR Remote Control driver registered, major 253
8 C! r$ l  U7 ^6 O( A[    1.837971] IR NEC protocol handler initialized
" Z8 X" I, Q: [% U8 p2 g. H- W[    1.842583] IR RC5(x) protocol handler initialized
  X% M7 l4 z$ k5 D, N[    1.847554] IR RC6 protocol handler initialized
9 T, D. x! ^) W$ M[    1.852136] IR JVC protocol handler initialized
[    1.856796] IR Sony protocol handler initialized
[    1.861480] IR RC5 (streamzap) protocol handler initialized
1 Q* ~: X8 P% u" J& i& D8 R/ r: b7 z[    1.867170] IR SANYO protocol handler initialized
[    1.871935] IR MCE Keyboard/mouse protocol handler initialized
- w5 [3 Q0 s0 t* D7 F[    1.877882] IR LIRC bridge handler initialized
[    1.882369] Linux video capture interface: v2.00
[    1.888722] watchdog watchdog: heartbeat 60 sec
! b5 S. J' m. |! @  y[    1.895285] cpuidle: using governor ladder
[    1.900118] cpuidle: using governor menu
# l7 |! W/ J5 @3 b: v; A1 `[    1.907499] davinci_mmc davinci_mmc.0: Using DMA, 4-bit mode
[    1.918396] TCP cubic registered
[    1.921694] NET: Registered protocol family 17
% x$ X' V$ o( l2 J[    1.927113] _regulator_get: deviceless supply cvdd not found, using dummy regulator
$ U$ @- p& A: g[    1.942633] console [netcon0] enabled
+ K7 `& M# d- p" P[    1.946844] netconsole: network logging started
[    1.951985] davinci_emac davinci_emac.1: using random MAC addr: 72:9d:29:ed:bd:8d
1 y, M3 G) v. B$ E, o[    1.971301] omap_rtc omap_rtc: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
. \2 D4 F$ a4 s: O[    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)
[    2.000512] Please append a correct "root=" boot option; here are the available partitions:
[    2.009218] 1f00             128 mtdblock0  (driver?)
[    2.014571] 1f01             512 mtdblock1  (driver?)
# P8 ]. H3 {2 Z+ Q' ?% A5 n7 {[    2.020016] 1f02             512 mtdblock2  (driver?)
[    2.025353] 1f03            4096 mtdblock3  (driver?)
[    2.030825] 1f04          519040 mtdblock4  (driver?)
1 c8 l4 T( f! d1 l[    2.036225] 1f05              64 mtdblock5  (driver?)
; d/ `" q5 B2 D1 F" c* B[    2.041536] 1f06             512 mtdblock6  (driver?)
$ N& c8 D! l9 S1 \+ z5 y[    2.046904] 1f07              64 mtdblock7
, N! X5 Q  u2 K5 D: R9 _[    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
! P. M$ C# k6 k. W[    2.071638] mmc0: new high speed SDHC card at address 1234
[    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)
                                                                                                                                          
% S/ R8 P9 h2 T% V) @然后串口就没有反应了，紧急求助

! ]8 D9 K' a: R9 Q* R+ e1 v

teddy

    2.051053] mmc0: host does not support reading read-only switch. assuming write-enable.
% d& |- r+ n8 d; ^% O, f1 C[    2.059503]  (driver?)
! i& V/ H4 {) E. K# M6 T/ U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。