Re: "aborting sbp2 command" expected in kernel.org FireWire maybe

Mark Knecht wrote:
> Pat LaVarre wrote:
>> All I can reproduce now is what you heard already i.e. I get "aborting sbp2
>> command" in 2.6 unless before use I:
>>
>> modprobe -r sbp2
>> modprobe sbp2 serialize_io=1
>>
> I think that's quite interesting and probably a clue.
>
> Is there a reason why serialize_io=1 is a problem for you? Can you not add
> that parameter to your modules.conf file and then it would boot and work
> correctly? Or have I missed that you did that already and it didn't work?

Under kernel 2.4, it can made the default by
options sbp2 sbp2_serialize_io=1
in /etc/modules.conf. Under kernel 2.6 it is of course
options sbp2 serialize_io=1
in /etc/modprobe.conf.

On a side note, I once put exactly this into modprobe.conf on
my Linux 2.6 PC. I have updated kernel and drivers since but
never bothered to test whether I can do without this option now.
All my equipment works reliably without this under Linux 2.4.

> I do think that Ben Collins might be interested in these results if we don't
> come to a real solution ourselves.

Actually he switched sbp2_serialize_io to 1 as the default for the
linux-2.4 branch since revision 1227.

Just remember: The serialization may avoid problems with a faulty
SBP-2 bridge firmware, but it may also mask bugs in the Linux kernel.

-- 
Stefan Richter
-=====-=-=-- =--= =---=
http://arcgraph.de/sr/
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