From: Tejun Heo <tj@kernel.org>
To: Chuansheng Liu <chuansheng.liu@intel.com>
Cc: MyMailClone@t-online.de, rjw@rjwysocki.net, aaron.lu@intel.com,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] ata: Disabling the async PM for JMicron chip 363/361
Date: Mon, 1 Sep 2014 08:40:23 -0400 [thread overview]
Message-ID: <20140901124023.GA3255@mtj.dyndns.org> (raw)
In-Reply-To: <1409531883-17260-1-git-send-email-chuansheng.liu@intel.com>
On Mon, Sep 01, 2014 at 08:38:03AM +0800, Chuansheng Liu wrote:
> After enabled the PM feature that supporting async noirq(76569faa62
> (PM / sleep: Asynchronous threads for resume_noirq)),
> Jay hit the system resuming issue, that one of the JMicron controller
> can not be powered up.
>
> His device tree is like below:
> +-1c.4-[02]--+-00.0 JMicron Technology Corp. JMB363 SATA/IDE Controller
> | \-00.1 JMicron Technology Corp. JMB363 SATA/IDE Controller
>
> After investigation, we found the the Micron chip 363 included
> one SATA controller(0000:02:00.0) and one PATA controller(0000:02:00.1),
> these two controllers do not have parent-children relationship,
> but the PATA controller only can be powered on after the SATA controller
> has finished the powering on.
>
> If we enabled the async noirq(), then the below error is hit during noirq
> phase:
> pata_jmicron 0000:02:00.1: Refused to change power state, currently in D3
>
> Here for JMicron chip 363/361, we need forcedly to disable the async method.
>
> Bug detail: https://bugzilla.kernel.org/show_bug.cgi?id=81551
>
> Reported-by: Jay <MyMailClone@t-online.de>
> Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Applied to libata/for-3.17-fixes.
Thanks.
--
tejun
next prev parent reply other threads:[~2014-09-01 12:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-01 0:38 [PATCH] ata: Disabling the async PM for JMicron chip 363/361 Chuansheng Liu
2014-09-01 12:40 ` Tejun Heo [this message]
2014-09-01 12:48 ` Rafael J. Wysocki
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