From: Shaohua Li <shaohua.li@intel.com>
To: Jeff Garzik <jgarzik@pobox.com>
Cc: linux-ide <linux-ide@vger.kernel.org>,
linux acpi <linux-acpi@vger.kernel.org>,
Len Brown <lenb@kernel.org>
Subject: Re: [PATCH]libata-acpi: add ACPI _PSx method
Date: Fri, 14 Sep 2007 11:11:56 +0800 [thread overview]
Message-ID: <1189739516.6330.12.camel@sli10-conroe.sh.intel.com> (raw)
In-Reply-To: <46E9FE3F.5040003@pobox.com>
On Thu, 2007-09-13 at 23:21 -0400, Jeff Garzik wrote:
> Shaohua Li wrote:
> > ACPI spec (ver 3.0a, p289) requires IDE power on/off executes ACPI _PSx
> > methods. As recently most PATA drivers use libata, this patch adds _PSx
> > method support in libata. ACPI spec doesn't mention if SATA requires the
> > same _PSx method, but executing _PSx for SATA should be ok I think.
> >
> > Signed-off-by: Shaohua Li <shaohua.li@intel.com>
>
> Where/how can a need for this change be produced?
I run suspend/resume test in a Thinkpad R40 laptop, which implements
_PSx method in IDE devices. But I'd say I didn't see visible difference
in the suspend/resume circle w/wo the patch in the test laptop. This is
just to make Linux match with ACPI spec. Maybe this changes other
laptops.
Thanks,
Shaohua
next prev parent reply other threads:[~2007-09-14 3:11 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-14 2:45 [PATCH]libata-acpi: add ACPI _PSx method Shaohua Li
2007-09-14 3:21 ` Jeff Garzik
2007-09-14 3:11 ` Shaohua Li [this message]
2007-09-20 22:00 ` Jeff Garzik
2007-09-21 1:16 ` Shaohua Li
2007-09-21 2:20 ` Tejun Heo
2007-09-21 2:17 ` Shaohua Li
2007-10-31 2:27 ` Len Brown
2007-10-31 13:26 ` Rafael J. Wysocki
2007-11-01 2:50 ` Shaohua Li
2007-11-01 10:04 ` Alan Cox
2007-11-02 1:32 ` Shaohua Li
2007-11-02 11:16 ` Rafael J. Wysocki
2007-11-05 1:26 ` Shaohua Li
2007-11-03 13:00 ` Jeff Garzik
2007-11-05 1:12 ` Shaohua Li
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