USB memory stick
jb.quenot at caraldi.com
Thu Oct 2 22:03:23 PDT 2003
* Michael L. Hostbaek:
> I have just purchased a MP3 player - which basically consists of a USB
> 128MB memory stick, with some audio hardware.. Anyways, when I plug
> the USB stick into my 5.1-RELEASE-p3 box, I am seeing the following in
> Oct 2 15:31:27 kernel: umass0: SigmaTel, Inc. USBMSC Audio Player, rev 1.10/0.01, addr 2
> Oct 2 15:31:27 kernel: umass0: Get Max Lun not supported (IOERROR)
> Oct 2 15:31:27 kernel: da0 at umass-sim0 bus 0 target 0 lun 0
> Oct 2 15:31:27 kernel: da0: <SigmaTel MSCN 0001> Removable Direct Access SCSI-4 device
> Oct 2 15:31:27 kernel: da0: 1.000MB/s transfers
> Oct 2 15:31:27 kernel: da0: 123MB (251904 512 byte sectors: 64H 32S/T 123C)
> Oct 2 15:32:22 kernel: (da0:umass-sim0:0:0:0): Synchronize cache failed, status == 0x4, scsi status == 0x0
> If I try and mount it, the box just freezez until I remove the device.
> Any ideas ?
The relevant info in the logs is that the device does not recognize the
« Synchronize cache » command. You may want to add a « kernel quirk »
in scsi_da.c, it consists of adding an entry for your memory stick and
telling that it does not support that command.
You can use the following PR as a model for chaning the kernel, it's a
PR I wrote for my own memory stick:
But first, be sure to upgrade your system to the latest current FreeBSD
sources (checkout HEAD). Most quirks are now no more needed due to a
recent refactoring of USB mass storage drivers.
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