Concerning my USB CF reader problem, I just don't know where it breaks. From the dmesg output, the device is recognized(partially at least), below is the output :
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usb.c: registered new driver usbdevfs
usb.c: registered new driver hub
usb-uhci.c: $Revision: 1.275 $ time 19:01:21 Jan 29 2003
usb-uhci.c: High bandwidth mode enabled
PCI: Found IRQ 5 for device 00:1f.2
PCI: Setting latency timer of device 00:1f.2 to 64
usb-uhci.c: USB UHCI at I/O 0x1820, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 1
hub.c: USB hub found
hub.c: 2 ports detected
PCI: Found IRQ 5 for device 00:1f.4
PCI: Setting latency timer of device 00:1f.4 to 64
usb-uhci.c: USB UHCI at I/O 0x1880, IRQ 5
usb-uhci.c: Detected 2 ports
usb.c: new USB bus registered, assigned bus number 2
hub.c: USB hub found
hub.c: 2 ports detected
usb-uhci.c: v1.275:USB Universal Host Controller Interface driver
usbdevfs: remount parameter error
hub.c: new USB device 00:1f.2-1, assigned address 2
usb.c: USB device 2 (vend/prod 0x7c4/0xa400) is not claimed by any active driver.
Initializing USB Mass Storage driver...
usb.c: registered new driver usb-storage
usb-uhci.c: interrupt, status 2, frame# 390
usb_control/bulk_msg: timeout
scsi1 : SCSI emulation for USB Mass Storage devices
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
USB Mass Storage support registered.
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usb-uhci.c: ENXIO 80000280, flags 0, urb d1c10230, burb d1c10330
usbdevfs: USBDEVFS_CONTROL failed dev 2 rqt 128 rq 6 len 18 ret -84
usbdevfs: USBDEVFS_CONTROL failed dev 2 rqt 128 rq 6 len 18 ret -84
Serial driver version 5.05c (2001-07-0 with MANY_PORTS SHARE_IRQ SERIAL_PCI ISAPNP enabled
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However, I don't know which device it has been assigned to(so even I want to do manual mount, I don't know how). I see an entry /proc/scsi/usb-storage-0 but don't know what it means.