Tejun Heo wrote:
> Paul Collins wrote:
>> Tejun Heo <htejun@gmail.com> writes:
>>
>>> Paul Collins wrote:
>>>> I found a setting labelled "SATA Power Management".  It was set to
>>>> "Enable".  When I set it to "Disable", 2.6.25-rc9 detected the optical
>>>> drive.
>>> This can't be something changed between 2.6.24 and 2.6.25-rc9.  Can
>>> you please double check that?
>>
>> I double-checked as follows:
>>
>> * Verified "SATA Power Management" set to "Enable"
>> * Verified optical device present in 2.6.24.3
>> * Verified optical device not present in 2.6.25-rc9
> 
> Thanks for checking.  Yeah, on the second though, ata_piix as of 
> 2.6.24.3 doesn't have SCR access at all, so it would have just worked. 
> Maybe what's necessary is more refined link onlineness test.  I'll prep 
> a patch.
> 

Can you please try the attached patch?  Thanks.

-- 
tejun