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From: Tejun Heo <htejun@gmail.com>
To: Paul Collins <paul@burly.ondioline.org>
Cc: Jeff Garzik <jeff@garzik.org>, linux-kernel@vger.kernel.org
Subject: Re: ata2: SATA link down (SStatus 611 SControl 300)
Date: Wed, 16 Apr 2008 09:15:17 +0900	[thread overview]
Message-ID: <48054515.4020202@gmail.com> (raw)
In-Reply-To: <87od8awxh5.fsf@burly.wgtn.ondioline.org>

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.

-- 
tejun

  reply	other threads:[~2008-04-16  0:15 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-14 21:48 ata2: SATA link down (SStatus 611 SControl 300) Paul Collins
2008-04-15  1:53 ` Tejun Heo
2008-04-15  2:30   ` Paul Collins
2008-04-15  2:57     ` Tejun Heo
2008-04-15  3:24       ` Paul Collins
2008-04-15  4:01         ` Tejun Heo
2008-04-15 21:12           ` Paul Collins
2008-04-15 22:26             ` Tejun Heo
2008-04-15 22:43               ` Paul Collins
2008-04-16  0:15                 ` Tejun Heo [this message]
2008-04-16  0:33                   ` Tejun Heo
2008-04-16  1:06                     ` Paul Collins
2008-04-16  1:27                       ` [PATCH #upstream-fixes] libata: force hardreset if the link is in powersave mode Tejun Heo

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