TQ210开发板 EHCI挂载U盘问题

我自己尝试移植了下USB HOST驱动，从内核打印信息上看已经正常驱动EHCI和OHCI了，当我插入U盘的时候也能正常识别U盘，查看U盘内的文件也是可以的，但是，如果对U盘内的任何数据做一下修改，umount的时候就会出错，错误信息如下：
usb 1-1.2: reset high-speed USB device number 3 using s5p-ehci
usb 1-1.2: reset high-speed USB device number 3 using s5p-ehci
usb 1-1.2: reset high-speed USB device number 3 using s5p-ehci
usb 1-1.2: reset high-speed USB device number 3 using s5p-ehci
sd 0:0:0:0: [sda] Unhandled error code
sd 0:0:0:0: [sda]  
Result: hostbyte=0x05 driverbyte=0x00
sd 0:0:0:0: [sda] CDB:
cdb[0]=0x2a: 2a 00 00 00 40 3f 00 00 01 00
end_request: I/O error, dev sda, sector 16447
Buffer I/O error on device sda4, logical block 16384
lost page write due to I/O error on sda4
我表示无比的纠结，跪求天嵌的大牛给指点下。。。但是，如果禁用EHCI，只注册OHCI设备的话可以mount、修改然后umount文件
启动时打印信息如下：
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
s5p-ehci s5p-ehci: S5P EHCI Host Controller
s5p-ehci s5p-ehci: new USB bus registered, assigned bus number 1
s5p-ehci s5p-ehci: irq 87, io mem 0xec200000
s5p-ehci s5p-ehci: USB 2.0 started, EHCI 1.00
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 1 port detected
ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
s5p-ohci s5p-ohci: S5P OHCI Host Controller
s5p-ohci s5p-ohci: new USB bus registered, assigned bus number 2
s5p-ohci s5p-ohci: irq 87, io mem 0xec300000
hub 2-0:1.0: USB hub found
hub 2-0:1.0: 1 port detected
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
usbcore: registered new interface driver usbserial
usbcore: registered new interface driver usbserial_generic
usbserial: USB Serial support registered for generic
mousedev: PS/2 mouse device common for all mice
i2c /dev entries driver
usbcore: registered new interface driver zr364xx
usbcore: registered new interface driver stkwebcam
usbcore: registered new interface driver s2255
uvcvideo: Unable to create debugfs directory
usbcore: registered new interface driver uvcvideo
USB Video Class driver (1.1.1)
gspca_main: v2.14.0 registered
usbcore: registered new interface driver Philips webcam
cpia2: V4L-Driver for Vision CPiA2 based cameras v3.0.1
usbcore: registered new interface driver cpia2
usbcore: registered new interface driver sn9c102
usbcore: registered new interface driver em28xx
usbcore: registered new interface driver usbhid
usbhid: USB HID core driver
TCP: cubic registered
Key type dns_resolver registered
VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 2
dm9000 dm9000 eth0: link down
dm9000 dm9000 eth0: link down
usb 1-1: new high-speed USB device number 2 using s5p-ehci
hub 1-1:1.0: USB hub found
hub 1-1:1.0: 4 ports detected
usb 1-1.2: new high-speed USB device number 3 using s5p-ehci
scsi0 : usb-storage 1-1.2:1.0
usb 1-1.4: new high-speed USB device number 4 using s5p-ehci
uvcvideo: Found UVC 1.00 device USB2.0 Camera (1e4e:0102)
uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround.
input: USB2.0 Camera as /devices/platform/s5p-ehci/usb1/1-1/1-1.4/1-1.4:1.0/input/input0
scsi 0:0:0:0: Direct-Access     Kingston DataTraveler 2.0 1.00 PQ: 0 ANSI: 2
sd 0:0:0:0: Attached scsi generic sg0 type 0
sd 0:0:0:0: [sda] 7856128 512-byte logical blocks: (4.02 GB/3.74 GiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] No Caching mode page present
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] No Caching mode page present
sd 0:0:0:0: [sda] Assuming drive cache: write through
IP-Config: Complete:
     device=eth0, hwaddr=00:09:c0:ff:ec:48, ipaddr=192.168.141.39, mask=255.255.255.0, gw=192.168.141.1
dm9000 dm9000 eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
     host=192.168.141.39, domain=, nis-domain=(none)
     bootserver=192.168.141.85, rootserver=192.168.141.85, rootpath= sda: sda4
sd 0:0:0:0: [sda] No Caching mode page present
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk

天嵌诸神，能否指导一二

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nightmeng 发表于 2013-4-8 11:22
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亲，怎么解决的？

同求