> I've just tested 2.3.99-pre3 with my Fujifilm SmartMedia card reader (SM-R1)
> using the 2 uhci and usb-uhci drivers: here a re the results:
[....]
Hi, I have also been attempting to work out why the SM-R1 does not
work very well. Here are my results to date in case it helps.
At 2.3.49 I could get the device to work 100% of the time on the 2nd
plug-in and occasionally even on the first plug-in (when lots of scsi debug
enabled). I did not really notice any difference between uhci and usb-uhci.
I finally managed to get enough logging enabled to see the difference between
a non-working case and a working case. It seemed to be the sense code returned
from the 1st TEST_UNIT_READY. In one case it reported 0x06 (UNIT_ATTENTION)
and in the other it reported 0x02 (NOT_READY). I think it was the NOT_READY
case which fails and all subsequent commands fail to work (timeout).
I then caught up to 2.3.99-pre3 ready to solve the problem but I cannot
get it to work at all. I went back to 2.3.49 and it works (sometimes)
so I am currently trying to find out at what kernel version it
stopped.
At a guess I would say that the USB side is fine, the device just seems
very fussy when it is first powered up and the current SCSI layer
does not do things in the right order for it to get happy. Indeed in
2.3.99-pre3 the scsi layer gets 1 error back and then does bus reset
which does not help in this case.
My system is a dual-cpu Gigabyte board if it matters.
--
Phil Davis - [EMAIL PROTECTED]
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