Re: [PATCH] Unbreak build of PMP with ACPI disabled

[Robert Hancock <hancockr@shaw.ca>]

Tejun Heo wrote:
>> Only problem I've noticed is that smartctl on drives connected to sata_nv
>> needs '-T permissive', while if same drive is connected to sata_sil24's PMP,
>> it works without problem.  
>>
>> Error SMART Status command failed
>> Please get assistance from http://smartmontools.sourceforge.net/
>> Values from ATA status return descriptor are:
>>  00     09 0c 00 00 00 00 00 00  00 00 00 00 00 50
>> A mandatory SMART command failed: exiting. To continue, add one or more '-T permissive' options.
> 
> Yeah, we seem to have some problem with passing result TF to userland in
> sata_nv (cc'ed Robert).
> 
> Thanks.

I've seen that report, but it's a bit of a mystery to me. Apparently the 
problem still happens if ADMA is disabled, and in that mode we just use 
the standard ata_tf_read function, so it's not clear how it could not be 
working on that controller but work on others..

Also I haven't noticed any SMART problems on my machine with ADMA 
enabled.. maybe it's drive or motherboard dependent?

-- 
Robert Hancock      Saskatoon, SK, Canada
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