Re: [patch] USB storage: Datafab KECF-USB, Sagatek DCS-CF

From: Marek Michalkiewicz (
Date: Sun Aug 04 2002 - 08:22:04 EST


> Heh, send this to me again after 2.4.19-final is out, and I'll
> reconsider it :)

Over a month later, here it is - this drivers/usb/storage/unusual_devs.h
entry appears to be sufficient to make my Sagatek DCS-CF work:

/* aka Sagatek DCS-CF */
UNUSUAL_DEV( 0x07c4, 0xa400, 0x0000, 0xffff,
                US_SC_SCSI, US_PR_BULK, NULL,
                US_FL_FIX_INQUIRY ),

Not even US_FL_MODE_XLATE or US_FL_START_STOP is necessary as far as
I can tell, but I guess that may depend on the chip revision.
US_FL_FIX_INQUIRY is required, or the device does not work at all...

Boot messages (with a 64MB == ~61 MiB CF card) look like this:

scsi1 : SCSI emulation for USB Mass Storage devices
  Vendor: Datafab Model: KECF-USB Rev: 0113
  Type: Direct-Access ANSI SCSI revision: 02
Attached scsi removable disk sda at scsi1, channel 0, id 0, lun 0
SCSI device sda: 125185 512-byte hdwr sectors (64 MB)
sda: test WP failed, assume Write Enabled
 sda: sda1
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2

The "test WP failed" message appears to be harmless - I have tested
reading and writing, and it works for me.


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This archive was generated by hypermail 2b29 : Wed Aug 07 2002 - 22:00:24 EST