RE: fixed a bug of adma in rhel4u5 with HDS7250SASUN500G.

[Kuan Luo]

Robert Hancock wrote:
> As I mentioned, this doesn't seem to resolve the problem we're seeing 
> with rapidly intermixed NCQ commands and cache flushes (at 
> least, if I 
> take out the arbitrary 20usec delay from the driver and add 
> this patch, 
> the problem still shows up). It could be a similar problem, 
> though, of 
> commands being issued before the controller is really ready 
> for them. If 
> you or others at NVIDIA could assist in tracking down that problem it 
> would be appreciated..
>
Ok , i will track down that problem. 
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