Robert worte.
> Kuan, does this patch (using the notifiers to see if the command is 
> really done) still work if one port on the controller has 
> ADMA disabled 
> because it's in ATAPI mode? I seem to recall Allen Martin mentioning 
> that notifiers wouldn't work in this case.

I just tried the 2.6.24-rc7 sata_nv driver with one hd and  one cdrom in
the same controller. 
I mkfs hd and mounted the cdrom and no error happened.

Allen,  is there anything about notifier that we should pay attention

> > 
> > * it sure seems like there are other open sata_nv ADMA 
> issues -- can we 
> > hard-confirm or deny this?  bugzilla wasn't very helpful 
> for me.  It 
> > doesn't seem like we can disable ADMA (to solve those 
> issues) and get 
> > enough test time in (which is what I said a week (or more?) 
> ago too...)
> The NCQ/non-NCQ command switching issue is still hitting some people 
> (last I heard Kuan was looking into this), also there's a 
> hotplug issue 
> that Tejun reported..
I have not yet reproduced the switching issue even if i removed the
udelay function according to your metholds.
I tried the 2.6.24-rc7. 
 I don't know what kernel version can easily reproduce the issue or
mabye i omit some steps during test.

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