Patch RFC: Promise SATA300 TX4 hardware bug workaround.

Søren Schmidt sos at
Fri Nov 2 03:42:07 PDT 2007

Søren Schmidt wrote:
> Good catch!
> However from my quick glimpse at the Promise sources the limit seems 
> to be 32 Dwords ie 32*4 = 128bytes.
> I'll investigate further and ask Promise for the gory details, stay 
> tuned...
> I dont think the PRD count limitation is a real problem, I've newer 
> seen that long a list and IIRC we newer do more than 64K transfers in 
> one go (yet).
> Anyhow I need to get checks in for that not just here...
> Give me a few days and I'll get this figured out for 7-rel...
Oh, and I forgot, do you have a surefire way to reproduce the problem so 
the fix can be tested ?

I've newer been able to trigger this problem myself so far.


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