Re: [patch 3/3] ata: SWNCQ should be enabled by default

[Robert Hancock <hancockr@shaw.ca>]

Jeff Garzik wrote:
> Kuan Luo wrote:
>> Robert wrote:
>>> -Hotplug/hot-unplug fails to work properly, hotplug interrupts not 
>>> raised (seemingly only on certain boards/configurations as I can't 
>>> duplicate this problem). http://bugzilla.kernel.org/show_bug.cgi?id=8421
>>>
>> I occasionly encountered this problem in one port under certain system,
>> but didn't see this issue under other systems in the same mainboard.
>> After adding the operation of manually clearing the added/removed
>> interrupt bit in NV_INT_STATUS_CK804 register in nv_adma_interrupt 
>> function,  i saw some improvement. 
>> The key problem is that no one who knows this controller comes to help
>> to solve these issue.
>> Given this disadvantage, i think disabling it maybe is a good choice.
>> I don't know whether we need to continue to provide patch for adma after
>> disabling adma function.
> 
> Is there any hope of getting permission for me to (a) give the NV ADMA 
> documentation to Robert, or (b) posting the ADMA PDF on 
> http://gkernel.sourceforge.net/specs/ ?
> 
> I strongly encourage vendors -- especially with chips at or past 
> end-of-life -- to help customers and developers by permitting posting at 
> http://gkernel.sourceforge.net/specs/
> 
> Thanks,
> 
>     Jeff

I would second that call. It's been suggested that 3rd party IP was what 
inhibited this, I don't know if that is the case or not. But it would be 
a very nice gesture if NVIDIA would do what it takes to make this possible.