On Tue, 14 Nov 2006, Moore, Eric wrote:
I don't know how to disable domain validation.
What I do know is the problem. THis is due to domain validation commands
timeout out,
which results in a host reset. From the mptspi host reset, the driver
starts
spi transport domain validation all over again, and thus the infinite
loop. We do need to
renegotiate again after host reset, or all the devices are at slowest
speed,
asyn narrow. I have proposed a patch on this mailing list a couple
months ago
to fix this problem, however that patch was rejected. My fix was in the
mptspi host reset function, where I told firmware to negotaiate with the
last
parameters, thus avoiding having spi transport dv going into infinite
loop.
However a better fix is to have spi transport avoid sending a host reset
when the commands timeout. I'm not sure if James Bottomely is waiting
for a patch like that which would address the concerns off all drivers,
instead
of just addressing mptspi wooes. I'm not sure. I could repost my mptspi
fix again?
Well, an unofficial fix is better than nothing, so feel free to post
your patch (just give me also some instructions to apply it as I'm not
familiar to kernel patching).
As to the problem itself, I can confirm it's not specific to mptspi,
I've observed the same behaviour with the aic79xx driver under kernel
2.6.17.4 :-(
--
Etienne Vogt ([EMAIL PROTECTED])
Observatoire de Paris-Meudon, France.
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