>>It looks like you might be the victim of a bug that I just fixed.  The
>>patch is included below (line numbers might be off slightly).
> 
> 
> OK. It does not crash.
> 
> But I can not mount neither burn. It simply hangs with no errors.

Hangs where, and how?  In fact, what's hanging?   At least three
separate processes could easily be involved ...

You might try again, after adding the two EHCI patches that are
pending in Greg's tree for the 2.5.34 release.  They might not
make any difference if you're hitting another usb-storage issue
though.


> Also with Red Hat 7.3 I was too optimistic. It does work
> but only at USB 1.1 speeds ...

And what do you mean by that?  Does /proc/bus/usb/devices
show a device that's not running at 480 Mbit/sec?  If so,
that's likely because it's not a high speed device.  Or do
you mean that the drive is still slow?  Is there some kind
of measurement you did?

I'm used to seeing usb-storage top out at 10-12 MByte/sec
when it's using high speed.  That can be almost doubled by
using bulk queueing (fixes in the works for 2.5).  But that's
with hard drives ... I confess I've not tried CD-ROMs much
over EHCI.  They're never going to be all that fast anyway.

- Dave




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